

Eventually, a massive explosion rocked the refinery, and the Legion was forced to retreat. Matilda did so, idly commenting that hopefully they'd be able to stop the fighting before the refinery was damaged even further this comment caused Beauregard to realize that Sonic and Bunnie's fight was a ruse, allowing them to attempt to destroy as much of the refinery as possible so as to both prevent the Sand Blasters from taking it over as well as put a stop to Eggman's schemes. Later, Matilda noticed that the Sand-Blasters, who had also been waiting outside the refinery, had started to move in Beauregard ordered her to power up the saucer so they could follow. Matilda calmly asked how long they would hold their position, and Beauregard replied that they'd wait until Bunnie had the situation under control or she needed their help. While Sonic and Bunnie fought inside the refinery, Matilda and Beauregard (along with the rest of the Legion) parked their saucer outside and watched the battle. Bunnie retaliated on instinct, throwing Sonic towards the refinery. Matilda piloted the Legion saucer carrying Beauregard and Bunnie she reacted only mildly when Sonic the Hedgehog suddenly attacked, punching the Baron in the face. The next morning, the Legion headed out for the Oil Ocean Refinery in order to protect it from the Sand-Blasters who hoped to take over the facility for themselves.

She calmly asked him where he wanted it placed, addressing him as "Baron" as many of the chapter do. While Grandmaster Beauregard showed his niece Bunnie D'Coolette around the settlement, he was interrupted by Matilda, who was carrying a large supply crate several times her size with one hand.

They made a new home for themselves in the badlands, constructing rough settlements and weapons. In exchange for being Legionized, the new DEL chapter was ordered to run and protect the Oil Ocean Refinery for Eggman. Though Beauregard made an effort of looking after Matilda, her traumatic experiences had caused her to become emotionally withdrawn, expressing little to no feelings. Wanting to protect the group, Beauregard Rabbot was forced to approach the Eggman Empire for help all of the former Robians received cybernetic upgrades and became a new chapter of the Dark Egg Legion.

Matilda and the former Robians attempted to settle in Sand Blast City before getting ready to return home however, the Sand-Blasters did not trust them and treated them as second-class citizens, driving them into the badlands. However, when the Bem performed a mass de-roboticization of almost all Robians on Mobius, she suddenly found herself returned to normal without knowing what had happened. Matilda was one of the many victims of roboticization during the First Robotnik War as a mindless robian, she was among those set against Sand Blast City. Matilda as a Robian, from Sonic Universe #48. Matilda subsequently ended up in an orphanage, having been told that her family had all either been executed or exiled for crimes against the kingdom, where she remained until being kidnapped-along with others-on the orders of Dr. When their parents were incarcerated for their crimes by the father of Rob O' the Hedge, the young Mighty made a bargain with Mammoth Mogul for super strength he could use to save them, only to be exiled himself. The younger sister of Mighty the Armadillo, Matilda was born in Mercia, and with her brother was the child of two armadillo thieves.
