Arnold was a member of the Sullivan Bros. Carnival and a close friend to Joseph Sullivan. After traveling back in time to the year of 1961, Arnold was trapped in the past and forced to live out his life with no memory of himself or the carnival. After more than thirty years, Arnold was reunited with Joseph, Lydia, and Samuel, and was returned to the carnival. Dying from a brain tumor, Arnold was killed by Samuel. He was an Advanced Human with the ability to manipulate the space-time continuum.
Arnold possessed the ability to travel forward and backwards through time. He was able to transport at least one other individual with him at any given time as well as transport just himself. Last year, Arnold began to have headaches after accessing his ability and as his life progressed he developed a brain tumor that caused him pain every time he would use his power.