Dimitri (born day 271, 2858) is a character in the Sonic the Hedgehog comic book series and its spin-offs. He was an alternate version of Dimitri from Dark Mobius and the former mobian cyborg-echidna leader of the Dark Legion.
Dimitri's early history was most likely largely the same as his Mobius Prime counterpart's. The point of divergence was when Knuckles prevented an attempt at his life, seemingly at the cost of his life. Unlike his Prime Zone counterpart, Dimitri and the other Echidnas he was meeting with continued to discuss their situation while Knuckles lay on the floor, believed to be dead. This act and others eventually led to Knuckles becoming a new Dark Enerjak and terrorizing all of Mobius.
Dimitri apparently sided with the resistance and some point, and while his health deteriorated rapidly he was able to instruct Jani-Ca, the daughter of Knuckles and Julie-Su, in the art of manipulating the Chaos Force.