|Manga Debut||Chapter 96|
|Anime Debut||Episode 31|
Joanna MacDonald first appears in Biney's Mute Amp exercise video. She later makes another appearance with Team Wyoming where she competes against Sket Dan in the Genesis World Grand Prix tournament.
She is an attractive young woman who has long, wavy, blonde hair fashioned into a ponytail with bangs at the front. She has fair, white skin and green eyes. Her Genesis World Grand Prix outfit consists of a blue tee with white stars. In Biney's Muteamp, she wears a purple tee and black shorts.