Fan Casting The TMNT S1 Ep3 Secret of The Ooze

After being hired by T.G.R.I a man named Baxter Stockman gets mixed up with the Foot Clan who end up forcing him to recreate a liquid that they synthesized years ago that mutates things if exposed to the liquid. Meanwhile the turtles are sent by Splinter on another mission while April goes back to work. While on the mission the turtles end up back at T.G.R.I after finding a strange container of green ooze that they traced back to T.G.R.I. While there the turtles find several containers of green ooze but while they're investigating some Foot soldiers spot the turtles and chase them out of the building where they fight for a bit before being interrupted by a man with a hockey mask and a hockey stick who takes out the Foot soldiers easily and asks the turtles if he needs to beat them up too. The man introduces himself as Casey Jones and tells them that he saw what happened. The turtles and Casey make their way back to the sewer where Splinter tells them they can't keep bringing people down there, but the turtles assure Splinter that he helped them. The turtles tell Splinter of the green ooze and T.G.R.I. Splinter admits to them that he knows what it is and pulls out an empty container of it and tells them it's what turned them into mutants.