Karkat Vantas

Karkat Vantas, also known by his Trollian handle carcinoGeneticist, is one of the trolls.

He spends a lot of time insulting and ranting about both his friends and the kids. He constantly insults others in the style of a stereotypical internet troll, supporting his arguments with what seems to be empty logic. He is often seen screaming, pounding his fists against his keyboard, or generally raging when talking to anyone. He is not particularly patient when explaining himself, making even his most sound advice appear to be random insults. Despite his arrogant and volatile behavior he proves to be a somewhat effective leader of the twelve trolls. He also "studies" relationships, as an avid admirer of troll romance novels and rom-coms. He considers himself an expert in troll relationship quadrants.

His associated zodiac sign is Cancer, which is technically considered a sign of the lime blood caste, but actually "transcends the Sign Class Spectrum altogether".