Phantom Rider

Phantom Rider is a Marvel comics character that appeared in Ultimate Spider-Man, voiced by Clancy Brown. He is the resident suprhero of a Wild West-themed dimension. His dimension's version of Doctor Octopus used a shard of the Siege Perilous to take control of Phantom Rider's mind, but Spider-Man freed Phantom Rider from Doctor Octopus' control and defeated Doctor Octopus.