Forming the Legion
Diesel was once a member of the Bear Pack, a group that previously came into brief conflict with Knuckles the Echidna. Some time after this altercation, Diesel managed to form an alliance between the Bear Pack and the Nasty Hyena Gangs, another Efrikan biker gang. It was this united group that then joined the Dark Egg Legion as its Efrika Chapter.
Meeting of the Grandmasters
As a distraction within a greater plan, Snively sent a recorded message to the Grandmasters, telling them that Doctor Eggman had been defeated and that the Eggman Empire had fallen. Thinking that he was now without higher leadership and restraint, Diesel decided that his Legion was now free to attack Mazuri as per his desire. Riding a hover-bike, he rallied his Legionnaires and set out across the Efrikan Plains, only to be suddenly teleported away. He found himself seated at a table aboard the Death Egg Mark 2, along with several other surprised Grandmasters. Eggman himself then strode into the room, confirming that he was in fact not dead, nor was his Empire fallen. After cruelly reasserting his control over the Grandmasters, he set a new task before them, instructing them to search for and recover his missing Blue Chaos Emerald. The Grandmasters, Diesel included, were then forcefully returned home.
- Sonic the Hedgehog: The Complete Sonic Comic Encyclopedia
- Sonic Universe #37, "Scrambled Part One: The Man in Charge"