Tuna Oddfellow is a magician in real life, "Fish the Magish" Fishman. He got attention during Second Life's heyday in 2007 when NBC did a "Most Talented Avatar" competition. "I've got a mission to bring a little magic to everyone's day," he told the reporter then. And magic he has delivered, eventually coming up with the Odd Ball.
Tuna at this time does not have a regular showing of the Odd Ball, instead having occasional performances, announcing to those on his contact list when he's about to start.
For more information, read Penny Shuftan's 2017 interview.
Correction: The date was orginaly a day off, and was later corrected.