Big the Cat is a large, purple anthropomorphic cat with yellow eyes and long ears who first debuted in Sonic Adventure on the Dreamcast. Big is laid-back and easygoing, which is reflected in his speech. Strong but gentle and a little slow, he lives a normally peaceful life in the jungle with his best friend "Froggy." He loves fishing, and he is never without his favorite rod and lure.
He first appeared in Sonic Adventure, where he is after his best friend, Froggy, who swallows a Chaos Emerald and grows Chaos' tail. Big was also playable in Sonic Shuffle. Next, he appeared in Sonic Heroes helping Team Rose save Froggy and Chocola (Cheese's twin brother) who had been kidnapped by Metal Sonic. He also appeared in Sonic Chronicles: The Dark Brotherhood as one of the main characters. Big also had a minor role in the DS version of Sonic Colors.He was a playable racer in Sonic & Sega All-Stars Racing, and made cameos in the Mario & Sonic series of games.
Big was featured in a McDonald's promotion between December 3 and December 27, 2004. One of eight handheld dedicated consoles packaged with Happy Meals featured Big recreationally fishing.
In a preview of Sonic and the Secret Rings, Nintendo Power praised the exclusion of Big from the game, referring to him as a "dim-witted, morbidly obese feline". However, Big later made his way into the game.
