and
Peter Laird.
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 ended.
IDW Comics In the
TMNT series released by
IDW Publishing, Casey is a young college
scholarship holder. Following his mother's death from cancer, his father, formerly Hun of the
Purple Dragons, became an alcoholic thug who would vent his daily frustration on his son. On one such occasion, Casey is saved from another violent beating by Raphael, who at this time is living a solitary life as a street vagrant unaware that he has a family searching for him. The two quickly become fast friends and fellow vigilantes until Raphael is reunited with his family, at which point Casey meets and befriends the other three turtles as well. He later meets April when she becomes his tutor, and introduces her to the turtles. After an especially violent beating by his father, Casey comes to live with the turtles, while his father returns to the Purple Dragons. == In other media ==