Larxus is an unkempt butler in the Champions' arena (located below the Champions guild) who is part of the Champions' Challenge activity. Larxus will not allow anyone into the fighting arena until the Player has presented a Champion scroll to him, and only then will he allow access to the arena below.
Rewards[]
When you complete a Champion's Challenge, Larxus rewards you with 200 to 6000 Slayer and Hitpoints experience, depending on which Champion was defeated.
After slaying all champions, players may speak to Larxus to claim the Champion's cape.