Don’t call it a comeback.

Former IFL Heavyweight Champion Roy "Big Country" Nelson -- who once chose his protruberant belly over a UFC contract -- and former UFC fighter Wes Sims will join Kimbo Slice on the cast of The Ultimate Fighter (TUF) 10, according to an MMAMadness.com report.

Nelson (13-4) is a heavy handed hitter is known for both his knockout power and submission game. He will join the reality show coming off back-to-back losses against heavyweight contenders Jeff Monson and Andrei Arlovski.

"Big Country" should hold the advantage in the experience department over fellow cast members and will likely be viewed as the early favorite to win.

Sims (22-12) is an MMA veteran who stands 6'10" -- he is among the tallest fighters in all of MMA who is known for his unorthodox fighting style. Sims trains out of Team Hammer House with the likes of Mark Coleman, Kevin Randleman and Phil Baroni.

"The Project" last competed inside the Octagon against Mike Kyle at UFC 47, losing via first round knockout. He also picked up losses at UFC 43 and 46, both to Frank Mir. Sims also has a technical knockout loss courtesy of Tim "The Maine-iac" Sylvia under the SuperBrawl banner for what its worth.

In addition to Slice, Sims and Nelson will join ex-NFL players Marcus Jones and Rex Richards, among others. It's certainly shaping up to be one big season.

TUF 10 will feature a cast of all heavyweight fighters and will be coached by former light heavyweight champions Quinton "Rampage" Jackson and Rashad "Sugar" Evans. The show is set to premiere on Spike TV on September 16.