It's one thing to compete on The Challenge with a rival, an ex or a bloodline -- or as a free agent -- but it's going to be an entirely different story for 10 vets from the long-running series as they go up against some very stiff, and professional, competition.

The Challenge: Champs vs. Pros -- a six-week special event premiering May 16 at 9/8c following the Invasion of the Champions reunion -- will feature familiar folks spanning Challenge 2000 (aka the third season!) and the most recent Thailand-based installment trying to defeat a group of America's top athletes. No Underdogs here!

Check out the Challenge roster below -- including a newly minted member to the elite MTV circle --and be sure to stay with MTV News as we approach the premiere of Champs vs. Pros on Tuesday at 9/8c!

Ashley K

Challenge win: Battle of the Seasons

Ashley M

Challenge win: Invasion of the Champions

Bananas

Challenge wins: The Island, The Ruins, Rivals, Battle of the Exes, Free Agents and Rivals III

Camila

Challenge win: Battle of the Exes

Cara Maria

Challenge win: Battle of the Bloodlines

CT

Challenge wins: Rivals II and Invasion of the Champions

Darrell

Challenge wins: The Gauntlet, The Inferno, The Inferno II and Fresh Meat

Jordan

Challenge win: Battle of the Exes II

Veronica

Challenge wins: Challenge 2000, The Gauntlet and The Inferno

Wes

Challenge wins: The Duel and Rivals II