*Barby Koala is a character that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. She is a mobian koala and the second-in-command of the Downunda Freedom Fighters. Originally an orphan who became a mercenary, she joined the group during their first attack on one of Crocbot's facilities and acknowledges the group that ultimately serves the Kingdom of Acorn. She is sometimes more decisive than her leader, Walt Wallaby, but is always ready and willing to follow orders.

Barby is a white mobian koala with a tuft of white hair and light blue eyes. Her eyelids and front torso are gray, and her ears are black. She also has a small black nose, and a short, fluffy tail. For attire, she wears a brown sash over her left shoulder, red gloves with two spiked knuckles on each hand, a black belt with a golden buckle at the waist, and tall red boots.*