Keep scrolling to meet the cast of “The Challenge All Stars: Rivals” — and see why each duo doesn’t get along. Adam and Steve both competed on “The Challenge: All Stars 4.” During the 2024 season, Adam voted to send Steve into the first elimination. Steve later got his revenge by stealing Adam’s star.

Enemies must work together if they want to win it all in a new season of "The Challenge All Stars: Rivals" premiering on Wednesday, Jan. 29.

“ The Challenge All Stars: Rivals ” Season 5 premieres today on MTV. The show airs Wednesday night, Jan. 29, starting at 8 p.m. Eastern. In the first episode, “A Star Studded Ar-Rival,” bad blood resurfaces as prior contestants are paired up with their rivals, and enemies must learn to work together if they want to try and win $300,000.