Fang the Sniper also known as Nack the Weasel, is a fictional character in the Sonic the Hedgehog universe. He is a purple anthropomorphic weasel that first appeared in the Game Gear video game Sonic Triple Trouble (alternatively known as Sonic & Tails 2 in Japan) as a treasure hunter who sought the Chaos Emeralds.
He is a slick, sneaky, and mischievous character who will steal the Emeralds for an easier job. Nack tries hard to outwit others, but is held back by naivety and often fails.
Nack the Weasel also appeared in Sonic Drift 2 as a playable racer, and in Sonic the Fighters as a playable fighter. He was set to appear in Sonic X-treme as a boss character, but the game was canceled. Nack makes a cameo in Sonic Generations on a "Wanted" poster in the City Escape stage. The poster reads "Wanted Fang A.K.A Nack"