(Taken From Worm Wiki)
According to Tattletale's power, the Endbringers were never human. Rather, the Endbringers appear to be made out some type of a crystalline material. In addition, they consist of multiple layers, with each successive layer being stronger than the previous one. There are 21 in total.
1 - Behemoth - Dyna-kinetic
2 - Leviathan - Hydro-kinetic, has Hydro-kinetic based Clairvoyance. May effectually manifest Water from Nothing.
3 - Simurgh - Telekinetic. has Telekinesis based Pre-Cog and Post-Cog. May create Tech of nearby Tinkers.
4 - Khonsu - Chrono-kinetic
5 - Tohu - Copies the powers of three nearby Super-powered individuals. Is always seen with Bohu. In story this ability was not shown to it's extreme.
6 - Bohu - May rearrange the terrain and surroundings at will. Is always see with Tohu. In story this ability was not shown to it's extreme.