Marine is an anthropomorphic raccoon with orange fur, a white muzzle, a small back nose, and blue eyes. She has brown triangular ears, brown rings around her rounded tail, and dark brown and cream-stripe markings around her eyes. On her head she has two upturned pigtails with brown tips that are held together by yellow scrunchies. Her attire consists of a lime green tube top with a white trim, short black leggings, lime green and orange shoes, white socks, and tan gloves.
Out of the Blue
At some point after crashing in Blaze's world with amnesia, Sonic encountered Marine, who saw he had no idea who he was. She decided to give him the nickname "Mr. Needlemouse", which Sonic found endearing.
- According to Ian Flynn, Marine was originally set to make a full debut in Sonic the Hedgehog #31 with a scene of her giving the amnesiac Sonic his nickname, but this was rejected by Sega as they did not want new characters being introduced at the end of an arc.