>>542498185
>but I don't remember this character
She's a 3D render on posters scattered throughout Station Square and Speed Highway. The drawn concept artwork is by Satoshi Okano, from around the time when he designed the character.
https://info.sonicretro.org/Sonic_Adventure/Development#Saturn-era_concept_art_by_Satoshi_Okano
https://x.com/okanotion/status/1727508980963188852
>>542504889
>Looks like she was just a character design the artist snuck in as a joke
She's not a joke addition. Just a character concept that wasn't used.