Introducing...the Champion to end all champions...weighting in a mere 700 tons...I give you...Sumoto!

—The Ringmaster introduces Sumoto


Sumoto is a minor antagonist appearing in Episode XVI: Jack and the Smackback.


Sumoto is one of the Dome of Doom Champions. He is a giant sumo who weighs 700 tons and is very ticklish. His signature move is a leaping attack called "Sumoto Slam Dive", which could crush his opponents.


Sumoto is the third Champion who was summoned by the Ringmaster after the defeat of The Aqualizer. He makes his first move by jumping to a great height to crush Jack into paste from above. Despite his landing squarely on Jack, the samurai survives and starts struggling to free himself from underneath Sumoto's body. When Jack shakes his head, his topknot tickles Sumoto, causing him to roll over. Jack then continues to tickle Sumoto until he faints from laughter. (Episode XVI: Jack and the Smackback)

It is unknown how the past Aku's destruction affected his existence.

Powers and abilities

  • Massive Bulk: At 700 tons of weight, Sumoto has strength in proportion to the point that every step he takes causes the Dome of Doom to quake. He can crush opponents with his sheer weight.
  • Sumoto Slam Dive: Despite his immense size and weight, Sumoto is able to jump to the very roof of the Dome, falling down on opponents to crush them.