Also known by his Trollian handle caligulasAquarium, is one of the Sea Dwelling Trolls. His associated zodiac sign is Aquarius (♒), and his horns are wavy which could possibly represent his associated symbol.
Eridan has an affection for tales of historical leaders, conquerors, and military history. His passion for these extravagant stories of conquest and glory lends itself to his overly theatrical mannerisms and his massive ego. As a result, people tend to see him as a "bit of a tool". He is described by Kanaya as overbearing, to the point where he has been blocked on Trollian by Vriska, of all trolls. He also likes magic and wizards, even though he knows that magic obviously doesn't exist.Despite allegedly hating all terrestrial life and being extremely dramatic about it, Eridan's tough facade crumbles when faced by, well, pretty much anything, which is an excuse for even more theatrics.