*Matilda the Armadillo (born 3228) is a character that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. She is a young mobian armadillo and part of the Dark Egg Legion stationed in the Great Desert. A native of the Kingdom of Mercia, she is the younger sister of Mighty the Armadillo, from whom she was separated as an infant. She underwent roboticization but was later returned to normal, after which she joined the Legion under Beauregard Rabbot. Matilda served her chapter in fighting the Sand-Blasters over control of the Oil Ocean Refinery, until she was reunited with her brother and accepted him as her family in an act of heroism that nearly got her killed.

Matilda is a mobian armadillo with dark green eyes and a green shell. She wears a simple gray dress with black tights and gray boots. Her eyes almost always appear half-lidded and her ears droop somewhat. She has large black, gray, and red piston-like cybernetic arms and hands. Her shell is slightly curved upward in the back.

Matilda is very calm, usually polite and taciturn, though she can be incredibly blunt without intending it. She's a hard worker and obeys orders without complaint and rarely shows emotion; almost to the point of appearing constantly deadpan. This stems from her unfortunate history-ending up in an orphanage with no known family, being roboticized, and then ending up in the Dark Egg Legion. While she is loyal to the Eggman Empire and Baron Rabbot, she seems to care for little else, barely even acknowledging her own brother when they were first reunited. However, Ray was able to help her open up, and she quickly became very attached to-and protective of-her big brother, risking herself to protect him. As a result, she became very friendly with both Mighty and Ray, and disappointed at having to be separated from them for a time being.

She is extremely resilient, being able to survive the gun shot from Jolt.*