Mongroun

Mongroun is a character that appears in the Sonic X anime series. It is an ancient robot created by the Murasia civilization and the guardian of the underground continent of the Murashia.

History
Following Murashia's descend into the underground, the Mongroun ended up hidden a among the lava tunnels where it remained disabled for an unprecedented amount of time. In the present however, several earthquakes caused the Mongroun to reactivate and it attacked Sonic and his allies as they fought Dr. Eggman in Murashia. Despite their efforts, Sonic, Knuckles, Rouge and the X-Tornado were unable to defeat the Mongroun. However, Sonic made it swallow a bomb from Dr. Eggman, which detonated within it, destroying the Mongroun.

Powers and Abilities
The Mongroun was an incredibly strong robot, so powerful that even the combined efforts from Sonic, Rouge and Knuckles were not enough to beat and only slowed it down at best.

The Mogroun proved itself to be incredibly durable, not even receiving a scratch from Rouge's Screw Kick, the X-Tornado's armaments or Sonic's ring-enhanced Spin Attack and only got a dent from Knuckles' punches. Thanks to its size, it had high physical strength, capable of toppling buildings with a single strike and knock away Sonic while in a Spin Attack. It also possessed a powerful fire breath.