From the Super Mario Wiki
Espio the Chameleon is a character from the Sonic the Hedgehog series, and a member of the Team Chaotix, along with Vector the Crocodile, and Charmy Bee.
Mario & Sonic at the Olympic Games
He appears in Mario & Sonic at the Olympic Games, acting as a referee, alongside many other characters. Espio is the third Sonic the Hedgehog referee, after Cream the Rabbit and Charmy Bee.
Mario & Sonic at the Olympic Winter Games
He once again acts as a referee in Mario & Sonic at the Olympic Winter Games.
Mario & Sonic at the London 2012 Olympic Games
watching the players play Badmiton
In Mario & Sonic at the London 2012 Olympic Games he gives players his costume after they win 12 events.
Mario & Sonic at the Sochi 2014 Olympic Winter Games
In Mario & Sonic at the Sochi 2014 Olympic Winter Games, he is the cameraman for record-breaking interviews with the athletes.
Super Smash Bros. Brawl
He appears in Super Smash Bros. Brawl as a collectible sticker.
Official profiles and statistics
|| Knuckles' Chaotix
|| [Body, Spin] - Attack +12|
Usable by: Sonic
||Espio is a vital member of the Chaotix Detective Agency. He is stoic and disciplined, acting as the voice of reason to Vector and Charmy. Being a chameleon, he can easily conceal himself from enemies...as long he doesn't sneeze. That may ruin the illusion.