On Sonic's world, the E-12 Behemoth hordes would at one point fight Sonic and Tails, but with little success. 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.