Arnold Bernid "Casey" Jones is a fictional character that appears in Teenage Mutant Ninja Turtles comics and related media. Created by Kevin Eastman and Peter Laird, he first appeared in the one-shot, Raphael: Teenage Mutant Ninja Turtle (April 1985). Like the turtles, Casey Jones is a vigilante, and was created as a parody of vigilante characters that were popular in comics at the time. Casey usually has long dark hair, wears an ice hockey mask and cut-off biking gloves, and carries his weapons in a golf bag over his shoulder.
His weapons include various sports equipment, such as baseball bats, ice hockey sticks, golf clubs, cricket bats, and tennis rackets. He becomes a love interest of April O'Neil in most continuities.
The character has been featured in various adaptations, and has been portrayed by several actors. He was first voiced by Pat Fraley in the 1987 series, Marc Thompson in the 2003 series, Chris Evans in the 2007 film, Josh Peck in the 2012 series, and Haley Joel Osment in the 2022 film adaptation of the 2018 series, in which Zelda Williams also voiced Cassandra "Casey" Jones, a Karai-inspired Foot Clan recruit who was originally intended to be a female iteration of the character, and has been portrayed in live-action by Elias Koteas in the 1990 and 1993 films and by Stephen Amell in the 2016 film.
Comic books
Mirage Studios
In the original Mirage series, Casey first appeared in the Raphael one-shot, by Kevin Eastman and Peter Laird. Casey was introduced as a violent, hot-tempered vigilante whose anger concerned even Raphael. The turtle stopped Casey from killing some muggers, causing an initial conflict between the two. This clash was quickly resolved, and Casey and Raphael became fast friends. Later, Casey came to the turtles' aid when they are attacked by the Shredder in April O'Neil's home. The vigilante even took the turtles to his grandmother's old farmhouse in Northampton, cementing his place with the group.
In the Mirage series, Casey is extremely violent, even more so than Raphael, but he mellows throughout the course of the series. In Shades of Gray, Casey accidentally kills a teenager who tried to mug him. The incident sent him into a drunken spiral, damaging his relationship with April O'Neil. His initial homicidal tendencies are especially present in his first appearance, although he never actually murders anyone in that instance.
During the three-part episode City at War, Casey leaves the farmhouse and begins to drive to Los Angeles, planning to find April, but instead meets a pregnant woman named Gabrielle with whom he falls in love and marries. Gabrielle dies during childbirth and Casey is left to take care of her daughter, whom he names Shadow. After spreading Gabrielle's ashes, Casey returns to New York with Shadow to stay with his mother. In a chance encounter, Casey is reunited with April when she comes to buy the apartment building owned by Casey's mother. During this meeting it is revealed that Casey's real name is Arnold but prefers to use his middle name only.
Casey repairs his relationship with April and they begin dating. By volume four, he and April are married, raising Shadow as their daughter and trying to have a child of their own. April eventually leaves Casey and Shadow when April learns that she is a living drawing that was brought to life by a magic crystal. As April comes to terms with herself in Alaska, Casey takes to the nightclubs to drown his sorrows. He meets up with the Foot Clan leader Karai at one of these clubs and, after a few drinks, awakens at Karai's retreat with no memory of the night before, although Karai knows something of what had happened. This plotline was left unresolved as the fourth volume came to an abrupt end.
Archie Comics
Although mentioned, Casey Jones never appears in the Archie Comics Teenage Mutant Ninja Turtles Adventures.