Former WWE superstar turned UFC fighter CM Punk has been announced as joining the cast of the returning MTV series The Challenge: Champs vs. Pros, with the latest installment featuring sports stars competing against alumni of the reality series.

The 6-week event, filmed a month ago in California, will feature the alumni competing for $50,000 for one man and one woman, while the athletes will be competing for charity, with CM Punk competing for PAWS Chicago.

The series, which ESPN featured a piece on today at this link, will debut on May 16th at 9pm Eastern.