Wave (character)

Wave the Swallow is an eighteen-year-old swallow and the mechanic of the Babylon Rogues. She plays her most prominent roles in the Sonic Riders series.

Mario & Sonic series
While Wave makes no appearance in the games prior to Rio's installment, she has a Mii costume based on her in Mario and Sonic at the London 2012 Olympic Games and Mario & Sonic at the Sochi 2014 Olympic Winter Games.

She makes a playable appearance in Mario & Sonic at the Rio 2016 Olympic Games. This is her only physical appearance outside of the Sonic Riders series.

Super Smash Bros. Brawl
Wave makes an appearance as a sticker in Super Smash Bros. Brawl.