Cyrax

The Cyrax is the final boss found in Insaniquarium, and is considered the mastermind behind many of the other aliens within the game. While not able to fight itself, it is able to summon other aliens to fight for it during the final battle.

Appearance
Cyrax has a molluscan-like body with several blue tentacles attached to a green body. It has four eyes as well. Unlike other aliens in the game, this one is the only one with visible organs (in this case, that would be the brain), exposed by a transparent casing with red and yellow markings.