It looks like some sort of snake - like - alien that is blue with a red scales and black eyes (green eyes in the old version.) It is found in the Crash Zone, the Bulb Forest and, the Dunes.
The Reaper's food chain is anything it sees. If the player wants to tame it, The player needs to feed it a fish called an Oculus. People may think it is the top of the food chain, but that would be incorrect. It only has one main predator, The Sea Dragon Leviathan. They stareted hunting the Reaper Leviathan after one of the Sea Dragons attacked the PCF (Primary containment facility) And released the Kharaa bacterium.