Kid Chaos

From Memory Alpha, the free Star Trek reference

Kid Chaos was the boxer personae who appeared on behalf of the aliens residing in chaotic space who were trying to contact Chakotay in 2375.

Kid Chaos appeared to Chakotay during a series of vision quests. The aliens would instruct Chakotay on how to escape chaotic space, which had a negative effect on Human neural pathways. (VOY: "The Fight")