Serpenter

Serpenter, known in Japan as E-38 Neo, was a robot formed when Doctor Eggman's numerous amounts of E-39 Quizons merged. It has only appeared in episode 9 of the anime series Sonic X, The Last Resort.

History
The Serpenter was formed by Eggman to combat Sonic the Hedgehog when he arrived to foil his plans. However, the Serpenter destroyed a good luck bracelet Amy Rose made for Sonic, throwing her into an extraordinary wrath. She tore the Serpenter apart in vengeance.