The announcement was made during Saturday’s UFC 181 card.
In addition to his years in the pro wrestling arena, Brooks, 36, is a Brazilian Jiu-Jitsu practitioner who has trained with renowned black belt Rener Gracie.
“My professional wrestling days are over, it’s awesome to be here. This is something I’ve wanted to do for a long time.
I have a background in kempo and I’ve been doing Brazilian jiu-jitsu for a long time. This is my new career, 100-percent. I’m going to go full steam ahead, all systems go after today, and it’s going to be fun.
I have nothing but respect for everybody here at the UFC, everybody who steps in the Octagon to fight. And when it’s all said and done, when I’m finished, everybody’s going to have to respect me because I have come here to fight.
I felt like it was now or never. I have a limited window most fighters don’t have. I’m either here to win or get my ass kicked.”
Other pro wrestling standouts who have made an impact in the Octagon include former UFC heavyweight champions Brock Lesnar and Josh Barnett, and UFC Hall of Famer Ken Shamrock.