Video Game Character (Created as a Human)
Powers and Abilities
Enhanced Jumping Shockwaves Enhanced Strength Size Alteration
Keone Young Paul Eiding (Ultimate Alien)
Ishiyama was credited as a Great Sumo Slammer Warrior in with the ability to increase his size, durability, and strength.
Ben and Gwen were sucked into the Sumo Slammer Smackdown video game, he aided them in their progress. At first he believed Ben was his arch enemy, Kenko, the Shapeshifter, but was convinced otherwise by Gwen. He is very honorable, responding that "a sumo never cheats!" when Ben asks him if he knows any cheat codes to help them out, but decides to make an exception and show them a shortcut to the last level. He considered Gwen a far greater fighter than Ben. He and Gwen fought Kenko while Ben searched for the Upgrade token on the final level. Kenko took his last life, but Ben revived him as Upgrade. He declared that he found Grandpa Max, who joined them at the last minute and was little more than a rookie, to be the greatest warrior of all for knowing that cleansing Sumo salt would reveal Kenko's true form when he disguised himself to deceive Ben and Gwen.
Ishiyama was mentioned in
where Ben stated that his enemy Kenko teamed up with him in the Sumo Slammers sequel series, Sumo Slammers: Hero Generation.
The Final Battle: Part 1
Ishiyama starred in
Sumo Slammers IV: The Movie in , battling one of The Perfect Girlfriend Kenko's minions in a sumo ring.
Ishiyama in Ultimate Alien
Ben 10: Ultimate Alien
Ben 10: Omniverse
Ishiyama is the last name of Yumi from Code Lyoko and Code Lyoko Evolution.
His name is Japanese for " stone mountain."
Ben 10 Characters
Ben Tennyson | Gwen Tennyson | Kevin Levin | Max Tennyson | Rook Blonko
Julie Yamamoto | Plumbers ( Manny Armstrong, Helen Wheels, Alan Albright, Cooper Daniels, Tack, Magister Pyke, Magister Korwak, Magister Hulka, Joel Tennyson, Gordon Tennyson, Betty Jean Tennyson, Wes Green, Blukic, Driba, Magister Patelliday, Sheriff Wat-Senn, Molly Gunther, Plumber Jerry, Magister Arnux) | Jimmy Jones | The Galvan ( Azmuth, Retaliator, Galvan Teacher) | Professor Paradox | Ship | Eunice | Zed
Petrosapiens ( Tetrax Shard, Sugilite) | Gluto | Galactic Enforcers ( Ultimos, Synaptak, Tini) | The Highbreed ( Reinrassic III) | Myaxx | Xylene | Colonel Rozum | SACT ( Lieutenant Steel) | Ignatius | Technorg | Hector | Elsgood | Sheriff Mason | Kai Green | Ishiyama | Tennyson Family ( Carl Tennyson, Sandra Tennyson, Frank Tennyson, Lili Tennyson, Verdona Tennyson, Camille Mann, Kenneth Tennyson) | Levin Family ( Mrs. Levin, Harvey Hackett) | Rook Family ( Rook Da, Rook Bralla, Rook Shar, Rook Shim, Rook Shi, Rook's Brother) | Ester | Gourmands ( Private Brown Bag, Queen Voratia Rumbletum, Sergeant Cast Iron, Sergeant Cookmeister) | Lewodans ( Tiffin, Sicily) | Rad Dudesman
Albedo | Elena Validus | Phil | Forever Knights ( Squire, Connor, Sir Cyrus, Patrick, Sir Driscoll) | Vilgax | Michael Morningstar | Sunny | Antonio | Cash Murray | J.T. | Oliver Thompson | Zaw-Veenull | Probity | Viktoria
Deceased Supporting Characters and Allies
Devin Levin | Magister Labrid | Magister Prior Gilhil | Pierce | Sir George | Winston | Victor Validus | Kwarrel | The Sentinel |
Prisoners of Aggregor
Bivalvan | Galapagus | P'andor | Andreas | Ra'ad
Hope | Hope's Stone Creatures | Argit | Baz-El | Simian | Vreedle Brothers ( Octagon Vreedle, Rhomboid Vreedle) | Blarney T. Hokestar | Raff | Serena | Bellicus | Mr. Baumann | Pakmar | Mazuma
Generator Rex Heroes
Rex Salazar | Bobo Haha | Agent Six | Rebecca Holiday | White Knight | Caesar Salazar
The Secret Saturdays Heroes
Zak Saturday | Doc Saturday | Drew Saturday | Fiskerton Saturday | Komodo | Zon
Future & Alternate Heroes
Ben 10,000 (Ultimate Alien) | Ben's Team (Alternate Timeline) ( Ben 10,000 (Alternate Timeline), Gwendolyn Tennyson (Alternate Timeline), Ken 10, Devlin Levin, Max Tennyson (Alternate Timeline), Kenny's Stone Pet) | Ben's Team (Dimension 23) ( Ben 23 | Tetrax Shard (Dimension 23) | Sevenseven (Dimension 23) | Azmuth (Dimension 23)) | Ben Tennyson (RAT Timeline) | Gwen Tennyson (RAT Timeline) | Max Tennyson (RAT Timeline) | Plumbers (RAT Timeline) ( Principal White, Mrs. Dalton, Mr. Hawkins, Fire Chief Whittington, Constantine Jacobs, Mr. Enguells, Mr. Jenyx, Mrs. Carlay) | Ben Tennyson (Gwen 10 Timeline) | Gwen 10 | Max 10 |