The Good, The Bad, And Casey Jones 2012
Teenage Mutant Ninja Turtles / TMNT season 2 episode 8.

Casey Jones makes his 1st appearance in TMNT series.
He does wear a Hockey mask most of the time.

Casey Jones is 17 years old, 5'8" with brown/black hair and left handed. He is missing his 3 top middle teeth from playing Hockey.
When in his crime fighting suit, he wears a Hockey mask and underneath it, is his painted face that resembles a skull. He has body padding everywhere and carries with him a goalie stick, regular Hockey stick and baseball bat. Hidden in his blocker glove are spikes, and he has a built-in potato masher tazer to electric shock his opponents. His shoes are also specially designed to change between sneakers and steel roller skates, allowing him to be faster with quicker moves.

He carries Hockey pucks, some that explode to shoot at opponents, and modified spray paint can grenades.

His Motto - "The name's Casey Jones: high school student by day, crime fighter by night"