Splinter (voiced by Darren Dunstan) is a main character of Teenage Mutant Ninja Turtles (2003). He's the mentor and father of Leonardo, Donatello, Raphael and Michaelangelo.
- Splinter will meet Jeffrey in Jeffrey & Friends' Storm Adventures of Teenage Mutant Ninja Turtles.
- He'll see him again and meet Jaden in Jeffrey, Jaden & Friends' Storm Adventures of Teenage Mutant Ninja Turtles (2003).
- Splinter acts as a mentor and father figure to Jeffrey, Jaden and their team. He's also one of Xion's Keyblade teachers.