Before he was James Diamond in Big Time Rush, James made his television debut as Shane in the iCarly episode "iSaw Him First"! By the time he hit Nickelodeon's air, he'd already got his start in operas and musicals, like Grease. JM Fun Fact: James has a scar on his elbow, that he received while performing a hockey-related stunt for the first episode of Big Time Rush. And we thought Carlos was the daredevil. Careful James! Your fans will be seriously devastated if you get another hockey hurt.