Piccolo was first brought onboard seaQuest through an inmate release program after volunteering to have working gills surgically attached to him. Because of this, he can breathe underwater without an oxygen tank, just like a fish.
Not one who deals well with authority, he turned his life around and became a member of the seaQuest team, though still retaining a lot of his attitude. Working down at engineering, he kept most of the electrical systems working. He liked to show off at card dealing, and could play the piano.
Though Tony was only a Seaman he was a member of many mission teams. His New York humor often lightened up tense situations. Bunking with Lucas, they became friends, and would often cruise together on shore leave.