Fan Casting Master Splinter in Sonic and the Turtles ROLL OUT (1999)

Master Splinter came with the turtles on their adventure to do what he can to defeat the Shredder and his alliance once and for all. On a mission to Dimension X where there was already a Decepticon stronghold, Splinter fought against battalions upon battalions of Foot Soldiers, Rock Soldiers, Decepticons, and Swatbots, giving his sons and their friends time to escape. Then Shredder, Megatron and Robotnik attacked him, and though he was formidable, Saki slashed him and Megatron beat him up. Sonic took Splinter back to Autobot HQ and now they think Splinter was gone for good. Only, he managed to survive the battle, doing the Chi Gong (internal breathing) until Ratchet heals him.