Warp is the main character in the series Kaiba. He is also known as Kaiba.
Warp goes through numerous transformations throughout the series. Depending on the location in the timeline, he is willfully acting as the main protagonist or the main antagonist. He assumes a number of physical bodies as well :
Warp in his Kaba body
Warp also has various abilities that he becomes aware of and learns to control, with varying degrees of success, over the course of the series which include: