Star Trek: Voyager: Season 5, Episode 19

5 - 19: The Fight

When Voyager is trapped in "chaotic space," an area where the laws of physics are in a state of flux, Chakotay begins hearing and seeing things. The telepathic aliens living inside the space are trying to contact the ship. However, prolonged communication may leave him insane or braindead. In their first attempt, Chakotay was boxing on the holodeck. The aliens induced further hallucinations of him boxing as "The Maquis Mauler," fighting Delta Quadrant's champion "Kid Chaos." Ultimately, the aliens help Voyager safely leave "chaotic space."