Kenny (shown, top left): ''My biggest regret is not punching a few people in the face. I'll leave nameless.''

Johnny Bananas: ''My most regrettable moment ironically came on the first challenge I ever did, The Duel way back in 2006. I somehow found myself in the first elimination of The Challenge pitted against my Real World castmate Tyler. [The elimination was basically tested your cockiness, and] I was the first to flinch.... I was eliminated shortly thereafter which concluded arguably the shortest ever appearance on a Challenge. Although this elimination was devastating, it soon became evident to me that more is learned in defeat than in victory. The best Challenge-related advice I was ever given was bestowed upon me by none other than The Challenge host with the most TJ Lavin. He pulled me aside and told me the only mistake I made was 'leaving my fate in the hands of someone else, and not determining my own.' I've carried this advice and this defeat with me ever since, and I truly believe it has a lot do with molding me into the competitor I am today.''

Sarah (shown, bottom left): ''I can't say I have very many regrets, but I do regret some of the bedfellows and enemies I've made that led to me being paired up with them on later challenges! I'm cursed with the partners who get me sent home for no good reason! In the future I'll be pickier about who I get into it with!''

Frank: ''My biggest regret on these challenges is letting some of my other cast members get the best of me. Now, that is not to say ANYONE has ever one-upped me, however, I am disappointed that I ever let anyone get under my skin and provoke me to points of irrevocable embarrassment. At the end of the day, if I walk away with one or two comrades from this INSANE social experiment, I'll be happy. So why did I put so much value into others' opinions along the way? I guess that was my personal challenge.''

Landon: ''My biggest regret is trusting the other finalists to be gentlemen when it got down to brass tacks. On The Duel II I made a mistake to leave the voting room, and when I returned the other guys had all nodded me to be the person to go into the elimination. [I was] totally f---ed because I was winning almost all the challenges up to that point and essentially had the final challenge in the bag. I got DQ'd for an unknown rule in the final elimination for The Duel II in New Zealand against Brad. Best of three bouts and the first went to Brad because of a s---, on-the-fly-call from TJ Lavin. During the heat of battle I was carrying Brad to my goal, and they penalized me a point. During the elimination I torn over 60 percent of my labrum in my left shoulder. I lost the elimination and went home, the night before the final challenge for the $100,000. The next morning I was in a Kiwi hospital getting an MRI while everyone else was racing to $100,000...brutal. I still get worked up about it now some five years later.''

Rachel (shown, top right): ''My biggest regret is not helping Aneesa more during the Exes competition. I could have been a better partner, and we definitely would have had a better outcome!''

CT: ''One of my biggest regrets was getting rid of Johnny Bananas instead of Big Easy (Eric) in The Gauntlet. I was playing the game emotionally, and Johnny would have obviously been a better competitor to have on my team over Easy, but I made a decision out of spite, and it came back to bite me in the ass.''

Cara Maria: ''My biggest regret is taking this s--- personally by letting my cast mates get to me. I cried on TV like a little b----, and then went off on people via social media. I hate that. But if you don't screw up, you don't learn. I'm thankful I've had the opportunity to look at myself from a different perspective and try to grow from it. I think I've grown up a lot.''

Beth (shown, bottom left): ''Whats my biggest regret? Getting disqualified against Svetlana after I so easily won. I loved torturing her in the log push me challenge. She was crying and whimpering because she couldn't push me an inch. It was great!''

The Miz: ''REGRETS ARE FOR LOSERS!''