Ben 10 season 4 episode 6 : Ready to Rumble

After damaging Gwen's laptop, Ben enters a mutant wrestling competition as Fourarms to earn some money to replace it, becoming an instant celebrity. During the tournament, he fights a pair of mutant brothers who owe a mob boss a large sum of money in order to save their farm. They entered the competition in order to pay off their debt, which Ben doesn't learn about until after defeating them. After learning the truth, Ben goes with them to save their mother, who is being held by the gang as "collateral". After rescuing her, Ben gives the prize money to the family since they need it more than he does. Returning home, he admits to what he did, only to discover that the computer wasn't even broken in the first place, requiring a special key that Gwen had to activate it.