
Rex
The Rex is one of the most iconic creatures in ARK. A powerful carnivore, often used as a combat mount for boss fights and base raids.
Full Rex wiki pageARK creature comparison
Side-by-side ARK creature comparison: stats, traits and which is better.

The Rex is one of the most iconic creatures in ARK. A powerful carnivore, often used as a combat mount for boss fights and base raids.
Full Rex wiki page
The Reaper, (also known as Xenomorphs) is one of the Creatures in the Aberration-DLC of ARK: Survival Evolved.
Full Reaper King wiki pageOverall winner: Reaper King
Reaper King comes out ahead on raw power (score 75/100, tier A) and wins 2/3 compared stats. Rex is more accessible to tame (Easy difficulty). Roles differ: Rex plays as a Scout, Reaper King as a Boss — pick by what your tribe needs.
Stat wins: Rex 1 – 2 Reaper King. Auto-generated summary computed from base stats — a community estimate, not an official ranking.
| Stat | Rex | Reaper King | Winner |
|---|---|---|---|
| Diet | Carnivore | Carnivore | — |
| Temperament | Aggressive | Aggressive | — |
| Tameable | Yes | Yes | — |
| Rideable | Yes | Yes | — |
| Health | 1100 | 45000 | Reaper King |
| Stamina | 420 | 480 | Reaper King |
| Oxygen | 150 | 150 | Tie |
| Food | 3000 | 3000 | Tie |
| Weight | 500 | 415 | Rex |
| Melee Damage | 1 | 1 | Tie |
| Movement Speed | 1 | 1 | Tie |
| Torpor | 1550 | 925 | — |