Some TMNT stuff really isn't for little kids.
He was used as the Foot Clan's contingency plan to attack Krang, along with Koya, while in the Atlantic Ocean aboard Krang's ship. This was in the event that the negotiations go south if Krang refuses to join forces with Shredder and attacks him.
He was involved in the Gauntlet battle between Shredder and Splinter, in which he was one of the four mutants who fought against the Turtles. He was defeated by Donatello when the mechanized Turtle (who was in an android body at the time) blasted an incredibly bright light in his eyes, blinding him. He attempted to save Koya when Leonardo slashed off her flight feathers, but the two were left permanently crippled.
After the events of the Gauntlet, he departed the United States with Karai, and went back to Japan. There he became more resigned to his blindness, and in fact became more aware of his surroundings through alternate senses. Along with Koya, he accompanied Karai on her quest to find a legendary sword, and helped solidify her power by disposing of Hayashi Toru's forces afterwards.
- Tom Waltz wrote the character as Armaggon originally. Bobby Curnow countered that besides being a shark, there are zero similarities since they are both different sharks.
- He and Koya have a relationship akin to that of a brother and sister, emotionally supporting each other and fiercely loyal.