|This character exists primarily or exclusively within the Sonic X continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
When invading Dr. Eggman's fortress, Sonic destroyed several E-12 Behemoths before finding Eggman. After Eggman's base got transported to Earth, an E-12 Behemoth was deployed to stop Rouge the Bat and Topaz from stealing Eggman's Chaos Emerald, getting destroyed in the process.
- The Robot's name, "Behemoth", comes from the Mythical Beast of the Bible.
|Heroes||Sonic | Tails | Amy | Knuckles | Cream | Cheese | Christopher Thorndyke | Big | Tikal | Vector | Espio | Charmy | Cosmo | Chuck Thorndyke | Helen | Danny | Frances | Nelson Thorndyke | Lindsey Thorndyke | Sam Speed | Ella | Mr. Tanaka | Mr. Stewart | Topaz | Hawk | Froggy | Emerl|
|Neutral/Anti-hero||Shadow | Rouge | Chaos | Gamma | ZERO | Beta | Delta | Epsilon | Zeta | Pachacamac|
|Villains||Eggman | Decoe | Bocoe | Bokkun | King Boom Boo | Bio Lizard | Dark Oak | Red Pine | Yellow Zelkova | Pale Bayleaf | Black Narcissus|
|Groups||Eggman Empire | E-Series | Chao | S-Team | G.U.N. | Chaotix | Cosmo's species | Metarex|
|Miscellaneous||Vanilla | President | Christina Cooper | Jerome Wise | Scarlet Garcia | Captain Westwood | Gerald Robotnik | Maria | Lily | Doctor Kai Narasu | Hector Dragg | Li Yan | Howard Watcher | Card Passer | Albert Butler | Elmer Johnson | Principal | Mayor | Next | Molly | Leon | Earthia | Galaxina | Landar | Daisy | Starla | Chrysanthemum|
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