The mask worn by Casey Jones is an old fashioned hockey mask. It is painted to look like a skull.
- In older versons of TMNT Casey's mask was shaped like a skull. Not painted.
- Sometimes it becomes darker.
- As stated by Ciro Nieli,"the paint job on the mask was a nod to Kevin Eastman and Peter Liards original mask design in the mirage comics".
- It get stolen and worn by The Creep in Within the Woods. Fortunaly, Casey was able to get it back.