This section is intended to be an exact copy of what the survivor Helena Walker, the author of the dossiers, has written. There may be some discrepancies between this text and the in-game creature.
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Species
Indominus Rex
Time
N/A
Diet
Carnivore
Temperament
Aggressive
Wild
Arguably the deadliest and most feared creature on the Island, Indominus Rex is a killing machine. Always searching in hopes of killing both for food, and for sport, a good plan is to avoid every Indominus Rex you encounter since they are known to be extremely hard to kill, and even harder to knock out.
It is pure power -- from its stomp to its tail. It is not able to intimidate every foe with its roar, but upon hearing it, it might scare even your mounts and drive them insane whilst not following your commands. These Indom's possess many abilities, each one has it's main purpose.
My crew and I were in the forest when we encountered the indominus Rex. It had been camo flashed and ambushed us before we even knew what was happening. This thing had some serious abilities. It could tail swipe, foot stomp, claw swipe, and bite. But the scariest part was its roar. It would communicate with the raptors nearby to distract us and then it would pick us off one by one by grabbing people, and once it grabbed you and ate you, it would go into some sort of bloodlust trance where it seemed to get even stronger the more it consumed. I was the only one to come out alive. It was a terrible experience and I still have nightmares about it, though I feel lucky to have crossed paths with an Indominus Rex and lived to tell the tale. Though I’m not sure if this predator grows bigger than a Giganotosaurus, I hope never to find out. Just one of these bruisers held its own against an army of us, and that encounter cost us dearly. Indominus Rex can sweep aside attackers with its tail, but it’s the other end you’ll really want to avoid. It has teeth like steak knives, set in jaws strong enough to shred most prey. Even a near-miss will carve you up, but good.
Domesticated
Anyone that manages to tame or create an Indominus Rex will gain a new way to rally their tribe for battle. There’s something about this monster’s roar that drives others to fight — a war cry for Hell’s own army.
The more tactical tribes will let their Indominus Rex tear through any creatures in their enemy’s ranks, thereby building up its bloodrage to take on the largest threats. Talk about shock and awe!
Highly aggressive, Indominus Rex will attack almost every living creature in sight aside from other apex predators. They're extremely bulky, rivaling both the Giganotosaurus, and the Carcharadontasaurus
Appearance
The Indominus Rex is an extremely large and often colorful theropod dinosaur. Females are known to only have grey scales, while males always seem to have very colorful scales, colors of practically every shade in-fact.
Color Scheme and Regions
This section displays the Moro's Indomitable Duo/Moro's Indominus Rex's natural regions. For demonstration, the regions below are colored red over an albino Moro's Indomitable Duo/Moro's Indominus Rex.
This information can be used to alter the Moro's Indomitable Duo/Moro's Indominus Rex's regions by entering cheat SetTargetDinoColor <ColorRegion> <ColorID> in the cheat console. For instance, cheat SetTargetDinoColor 1 6 would color the Moro's Indomitable Duo/Moro's Indominus Rex's "" magenta.
Region 0 is not used for this Creature.
Region 1 is not used for this Creature.
Region 2 is not used for this Creature.
Region 3 is not used for this Creature.
Region 4 is not used for this Creature.
Region 5 is not used for this Creature.
Variants
Unknown
Breeding
One of the more difficult dinos to breed in captivity, due to the difficulty in maintaining proper egg temperatures, and the long period of hand-feeding the infant. At least 2 Air Conditioners and multiple standing torches are recommended to aid in maintaining the egg at the proper temperature. Between monitoring the egg during incubation and hand-feeding the infant, it is an 8-9 hour commitment to get the baby to the stage where it will eat out of a Feeding Trough.
Type in values of a wild creature to see on which stats it's emphasized. Green values on a high-level creature are very good for breeding. If you have already tamed your creature you can try to recover the breeding stats with an external tool.[1]
Moro's Indomitable Duo/Moro's Indominus Rex
The stat-calculator does not work in the mobile-view, see here for alternatives: Apps
Note that after the creature is tamed it gets bonuses on some stats depending on the taming effectiveness. This makes it hard to retrieve the levels on a tamed creature, so this tool is only for wild ones, but gives a first impression, how well the stats are distributed.
Attacks & Abilities
Features Include: Standard Bite, Roar that applies fear on wild creatures. Camo Ability that disables if you attack. Tail swipe that deals massive knockback and critical damage. A claw swipe ability that deals bleed damage. A Foot stomp ability that deals massive local blunt damage. A Communication Roar that applies a Courage Buff on Tamed creatures, and when used near Wild Raptors it can communicate with them and gain their trust. A Grab ability that allows you to pick up humans and dinos and chomp. (Successful kills while holding a creature in hand will grant a stack-able melee buff increase.)
(Left Click) ---> Bite
(Right Click) ---> Roar (Stationary and mobile) (Fear Buff)
(C) ---> Cloak / Camo Ability
(X) ---> Tail Swipe
(Middle Mouse Button) ---> Claw Swipe
(Alt + X) ---> Foot Stomp
(Alt + C) ---> Communication Roar (Courage Buff / Trust Buff)
(R) ---> Grab Ability (R picks up and drops target) [Left Click to bite)
Taming
For general info about domesticating a wild creature see Taming.
KO Strategy
Indos are extremely fast, powerful and heavily resistant, trying to tame an Indominus Rex solo on flat ground is pretty much a death sentence and should only be attempted by true survivors. Bring a few friends and shoot Shock Darts at it, if you manage to knock one out be aware since Indom's wake up extremely fast. This is not the preferred method of obtaining an Indom due to the extreme risk.
Genetic Creation Strategy
There are two methods to this, and both are equally hard and viable.
The first Option: You will want to kill a couple Wild Indominus Rex's in order to obtain their ribs for DNA Extraction. Once You have obtained Indominus Rex Ribs, you will want to put them into a DNA Extractor, powered by power cells in order to obtain Indominus Rex Petri Dishes containing the extracted DNA. With these Petri Dishes you will need to combine them into Pure Indom DNA Vials, since Petri Dishes are not pure DNA Strands and need to be combine. Following this you need to turn this Pure Indominus DNA Vial sample into an Indominus Rex Genome using the DNA Sequencer. Finally you will need to get yourself a host fertilized Rex egg and combine the Indominus Rex Genome with the Fertilized Rex egg to create a Genetically Engineered Indominus Rex Egg. You will then put this Egg Into the GMH Incubator, power it on with power cells, put the egg in and then left click the egg with the incubator on to bring up a button to hatch the egg manually.
The second option: You will want to kill a variety of creatures such as, Carnos, Gigas, Raptors, Rex's, and Therizinos in order to obtain their Apex Drops. Once You have obtained their items such as, Therizino Claws, Raptor Claws, Gigant Hearts, Rex Arms Or Rex Teeth, Carno Arms, you will want to put them into a DNA Extractor, powered by power cells in order to obtain the according Petri Dishes containing the extracted DNA. With these Petri Dishes you will need to combine them into Pure DNA Vials, since Petri Dishes are not pure DNA Strands and need to be combine. Following this you need to turn these pure DNA Vial samples into an Indominus Rex Genome using the DNA Sequencer. Finally you will need to get yourself a host fertilized Rex egg and combine the Indominus Rex Genome with the Fertilized Rex egg to create a Genetically Engineered Indominus Rex Egg. You will then put this Egg Into the GMH Incubator, power it on with power cells, put the egg in and then left click the egg with the incubator on to bring up a button to hatch the egg manually.
Step by step to hatch a crafted Indominus / IndoRaptor egg
Step 1. Put a Genetically Engineered Indom Egg in the Incubator.
Step 2. Put Power Cells In Incubator
Step 3. Turn On Incubator
Step 4. Left Click the Egg while inside the Incubator and a button labeled "Hatch Egg" Will Pop up.
Step 5. Click the Hatch Egg Button.
Common strategies include:
Build a tower 10 Stone Pillars high with a ceiling on top. Lure the Rex to it while riding a flying mount, then land on your tower and shoot tranquilizers at it.
Find a Rex that spawned near a cliff. Quite a lot of Rexes spawn in the cove on the southeastern shores, sometimes 4 at a time. Stand on top of the cliff and shoot Tranq Arrows at it - it will usually stand still while trying to reach you. This method makes it relatively easy to tame a Rex solo. You can also aggro the Rex from a distance and steer it to a cliff while riding a fast mount, such as a Raptor.
If you can't find a cliff, bring a friend with a Tapejara, Pteranodon, Argentavis or Quetzal. One player flies the mount and carries the other player, which then shoots Tranq Arrows at the Rex. Be careful to not let your mount run out of stamina, or the Rex will most likely kill all three of you when you go down!
Bring one or more tames set to passive. The Rex will usually attack your tame while you can shoot Tranq Arrows at it from a distance.
Another strategy is to find an area with large amounts of prey animals, and lure the Rex towards it, then, while it is attacking or eating, shoot tranq arrows or darts at it, avoiding its aggro by running towards another prey animal, and repeating the process until the Rex goes down. However, neutral prey, such as Triceratops will continue attacking, which will lower effectiveness, so be prepared to kill the prey as well.
Lure a rex into a behemoth gate cage and use your friend's flyer (Don't use pteros, if you try and shoot it will shoot them) to start shooting it down and you got yourself a safe spot
Ride a Raptor oriented for Stamina, speed, and enough carry Weight. A Raptor outruns easily a Rex so run forward, turn to the side, shoot at it, then turn and resume running again. Each pause to shoot will allow the Raptor to regen Stamina while you take the time to line up a good shot. As well using rocks and other terrain features to kite it around help greatly. It will eventually run which is easy to catch on a Raptor.
Create a simple trap. Four stone foundations 2x2. Surround perimeter with stone doorways two high. Pick a side, build two ramps from the top doorway to the ground. Kite the Rex up the ramp into the box. Stand back and tranq. Be ready to destroy a few doorways once it's tamed. Replace, Rinse, Repeat.
Create a taming boat that consists of STONE so the rex won't break it and make the area the rex will be out of stone doorways. (ALSO MAKE SURE TO COVER THE WOOD PART OF THE RAFT) This allows you to shoot it with tranqs and it won't get out. Make a ramp that leads into the trap. Once your taming raft is made and ready park it on the shore close to the rex you want to tame, make sure you're faster than the rex, and agro it up the ramp. Into the trap and run through the gaps in the doorways and tranq away! Alternatively, if you wall off the portion of the raft where you stand to drive, you can drive the still-awake rex to your base and tame it in safety there.
A Cryopod will make the taming boat 100%-ly reuseable.
Build 3 Stone Gateways and place a Large Bear Trap in the middle. Lead the rex into the bear trap and place a fourth gateway behind it, effectively trapping it. The gateways are not big enough for the Rex to escape or fight back, assuming you’re a safe enough distance shooting at it. After it is knocked out simply remove the gates and tame normally.
Another way to successfully capture one is to lay out Large Bear Traps. About 10 should do the trick, add more if you are uncertain. Arrange the traps into a triangle shape and then get the Rex's attention by shooting it with the tranq arrows. If you get it ensnared with the trap they wont be able to escape and will keep getting stuck allowing you to knock it out with the arrows.
If it is near sea or a deep lake, it will never attack you if it can't reach the bottom of the water without diving, so you can fire a crossbow and the rex will not attack you, this can be used to escape if one aggroes on you early-game.
This section describes how to fight against the Indominus Rex.
General
The Indominus Rex is an imposing threat that is not only durable, but also hits rather hard. Their ability to traverse terrain quite well as well as all it's deadly abilities only helps to cement it's position at the top of the food chain only outclassed by the likes of the titans or bosses. While they are definitely the larger of the dangers in the environment. You can not outrun them on foot nor with most dinosaurs. The best way to avoid Indoms is through being in the air or on high ground.
Strategy
Bring Many high level dinos, (preferably titans or its rivals the Giga and Carchar) to gang up on an Indom, but don't go in directly on a mount since Indoms can stun and kick you off any mount when it stomps.
Weaponry
Make sure that you have at least two poweful Rex's or any other powerful dino. Weapons such as the Assault Rifle or the Rocket Launcher etc aren't very affective.
Dangers
Indominus Rex is an endgame mount which is meant to be super powerful in the right hands and is not to be trifled with, especially in the early game. If a player encounters an Indom in the wild and it notices that player then there's no hope in running, it will easily catch up. Getting it stuck between trees is useless, as it destroys trees as it walks. They can effectively kill a low-level player in only one bite and reduce thatch structures to nothing in seconds. Even players in flak armor aren't safe from a continuous Indominus Rex assault due to the Claw Swipe which deals massive bleeding.
Weakness
Indom's have virtually no weakness besides being ganged up on by other Indom's or other Apex Creatures.
Utility
Roles
Tank: Possessing a huge health pool, the Rex also inflicts greater damage and moves much faster when compared to bulkier tanks such as the Giganotosaurus. (Level up Health and Melee Damage)
Hunter: Probably the best creature in the game at harvesting meat and other resources from carcasses, the Rex has little to fear in the wilds. (Level up Melee Damage and Health)
Damage: While still nowhere near that of Giganotosaurus, Rex's damage output is incredibly high, and its durability is also useful for long skirmishes. (Level up Melee Damage and Health)
Transport: Excellent speed, effective traversing over rough terrain, and good carry weight make Indom's decent for transporting goods. Although they do not get any weight reductions on resources, very few are dumb enough to challenge the raw power of an Indominus Rex convoy. (Level up Weight, Movement Speed, and Stamina)
Intimidation Tame: With its high volume of roar and large overpowering appearance, the Indominus Rex is by far one of the best ways to ward off anyone who dares attack your mount. Furthermore with its roar ability to cause lower-leveled wild/non-allied dino/survivors to defecate makes it, even more, intimidating with the only creatures being more intimidating are the Yutyrannus, Spino, and the Giganotosaurus.
Raid Boss Tank/DPS: Indom's are among the best creature to use for battles against the bosses such as the Broodmother Lysrix and the Megapithecus. Their massive health pool and high damage can allow a horde of them to hold aggro on a boss for a very long time. Coupled with a Yutyrannus providing a courageous roar and a few Daeodon providing healing, they can take down a boss without requiring guns and ammunition...but you should bring those with you, just in case. (Level mostly Health and some Melee Damage.) Overall, Rexes are compatible with the numerous creatures that can be brought to boss fights to devise creative strategies to bring the guardians down.
Yes
No
Indominus Rex Rib
Air Conditioners and multiple standing torches are recommended to aid in maintaining the egg at the proper temperature. Between monitoring the egg during incubation and hand-feeding the infant, it is an 8-9 hour commitment to get the baby to the stage where it will eat out of a 
Feeding Trough.
Health
Stamina
Oxygen
Food
Weight
Melee Damage
Movement Speed
Torpidity
Raptor.
Tapejara, 
Pteranodon, 
Argentavis or 
Quetzal. One player flies the mount and carries the other player, which then shoots Tranq Arrows at the Rex. Be careful to not let your mount run out of stamina, or the Rex will most likely kill all three of you when you go down!
Triceratops will continue attacking, which will lower effectiveness, so be prepared to kill the prey as well.
Stamina, speed, and enough carry 
Weight. A 
Exceptional Kibble:
1 × 
Extra Large Egg, 5 × 
Fiber, 1 × 
Focal Chili, 10 × 
Mejoberry, 1 × 
Rare Flower, 1 × 
Water
Yutyrannus, 
Spino, and the 
Giganotosaurus.
Broodmother Lysrix and the 
Megapithecus. Their massive health pool and high damage can allow a horde of them to hold aggro on a boss for a very long time. Coupled with a 
Daeodon providing healing, they can take down a boss without requiring guns and ammunition...but you should bring those with you, just in case. (Level mostly Health and some Melee Damage.) Overall, Rexes are compatible with the numerous creatures that can be brought to boss fights to devise creative strategies to bring the guardians down.
Raw Meat
Raw Prime Meat
Pelt
Chitin
Keratin
Hide
