Zero

His body is gray, with slightly lighter gray arms and legs.He's shaped like the number 0.He wears a blue-and-yellow cap.His cap has the equation e^(iπ) + 1, also known as Euler's identity, which equals zero. Fifteen: Zero appears to have a crush on Fifteen. He gets flustered around her.Fourteen: Fourteen chases Zero in the episode "Alone."Six: Zero invites Six into his bunker in the 2,763,000 subscriber special.The other Zeroes: He frequently bosses them around, although they're technically his fellow ZeroesBossy: He likes telling the other Zeroes what to do.Easily embarrassed: He gets extremely upset when people laugh at his embarrassing recordings.Short-tempered: When he's really angry, his body turns bright red.Caring deep down: He doesn't always mean to hurt others and sometimes apologizes.Silly: He occasionally shows a goofy side.