Name Casey Arnold Jones
Codename None
Age 25
Residence New York City
Status Alive
Relatives Unnamed mother (deceased), Arnold Jones (father)
Faceclaim Mark McKenna
Casey Arnold Jones is a young college student on a hockey scholarship. He had more love for his sports activities than his studies, as well as a keen love of vigilante street fighting.
Upon his mother's death by cancer, his father became an alcoholic thug who would vent his daily frustration by beating his son. Casey did not fight back, due to a promise he had made his mother. On one such occasion, Casey was saved by Raphael, who at the time was a street vagrant with no memory of his past or his family. The two quickly became fast friends and fellow vigilantes.
When Raphael was reunited with his brothers and their father Splinter, Casey gained them as friends as well. He and Raphael would regularly patrol the streets of Brooklyn in search of crime to punish, which is where they first stumbled across the Foot Clan mutant Alopex.
Around this time, Casey met April O'Neil, who wanted to take self-defense classes from him after her traumatic experiences at StockGen Research. After he learned the reason for it, and that her experiences were in connection, with his new friends, he brought her back into contact with the Turtles, sparking another important friendship for them.