Teenage Mutant Ninja Turtles returns to Nickelodeon with all-new episodes on Feb. 2, as well as a nice surprise for old-school TMNT fans: Recurring Turtle ally Casey Jones is going full masked vigilante.

In the original 1987 animated series, Jones was a violent, Rorschach-esque crime fighter who treated murderers and litterbugs with equal equal disdain and never removed his iconic hockey mask. Nickelodeon’s slightly kinder, gentler Casey is a pal of April O’Neil’s who speaks with Josh Peck’s voice and generally prefers to show his face — at least, until he decides it’s time to take a stand against “pure evil” in Sunday’s episode, titled “The Good, The Bad, and Casey Jones.”