|Sumo Slammer Boy|
|Voice Actor||Tara Strong|
|First Appearance||Washington B.C.|
He has dotted eyes, light brown hair with a flipped-up hairstyle. He is wearing a blue shirt and green pants. There is light blue circle on his shirt which is split by a cracked line.
He and his mother were trapped in their house which was set on fire by a few robbers. Heatblast saves him and his mother too just in time. Heatblast then sees that he collects Sumo Slammer Cards and has three Gold Cards. When Heatblast asks where he got them. He finds the situation strange and says that they were inside of a box of Sumo Smacks Cereal. However, Gwen and Max arrive and says that the fire was just to cover a jewelry store robbery.
- Washington B.C. (first appearance)