I'm going to be a game master in an RPG, fantasy themed.  Could you suggest an NPC that the players could encounter in the tavern?  Please provide a name, physical description, character notes, and a quest hook to use with them.
**Name**: Valis the Brawler

**Physical Description**: Valis is a bulky, barrel-chested half-orc with dark green skin and a shock of orange hair. Despite his immense size and intimidating appearance, Valis is a friendly and cheerful soul who loves a good scrap and a good drink. He has a number of scars and a missing ear from years of fighting in the arena.

**Character Notes**: Valis is a retired fighter who now works as the bouncer at a local tavern. He is always ready to lend a hand to those in need, using his martial skills to protect the vulnerable and weak. Valis has a soft spot for lost pups and kittens at the tavern, and will do anything to protect them.

**Quest Hook**: Valis approaches the players, saying he's heard they are some of the toughest fighters in town. He has a challenge for them - a tournament is being held in the arena, with a fortune in gold and magic items going to the winner. Valis is putting together a team and invites the players to join.