Gum is the deuteragonist of the Jet Set Radio video games first released in 2000. She is the second gangster to join the GGs, the first being Beat and followed by Tab. She has appeared on most Jet Set Radio merchandise and game covers, and is one of the three main mascots of the series, alongside Beat and Professor K.
Unlike the other characters of the series, Gum has made the most appearances outside the Jet Set Radio series, mostly due to her being a fan-favorite character among fans. She has cameoed in Skullgirls and Splatoon, and appears as a playable character in the Sega All-Stars video games series.
- Gum's voice actress has remained a mystery for many years.