Groucho is an enemy found only in Magicant. It has no offensive attacks, and it's only move goes as follows: "Groucho said "Hello", then just walked away. Don't know why, but [party member]'s EXP increased." The increased EXP only goes to one party member. Strangely, defeating this enemy awards you less experience if you defeat it with an offensive move.
|“||If he was a mask, someone might mistake your identity!”|
|— Enemy description • Mother|