Ratchet & Clank

Ratchet & Clank went side-by-side with Jak and Daxter and Kingdom Hearts, but Ratchet's characterization in the the original game is more of a deconstruction. Ratchet starts off as a hotblooded jerk with traits of a common mascot with attitude, but his abusive treatment of Clank and his single-minded desire for revenge against Captain Qwark instead showed Ratchet was on his way to becoming a villain. He gets over it, drops the attitude to become a Deadpan Snarker Nice Guy, and becomes a more noble and beloved hero in the sequels. With the PS4 game, the edgy attitude was dropped from his origin story entirely.

Example of:
Mascot with Attitude