Omar is a fourth degree Black Belt in Taekwondo, and has been practicing the Korean martial art for 16 years, competing mostly in full-contact competitions.
Omar had his first professional mixed martial arts bout on March 10, 2007, at the event Alianza Nacional Full Contact against Team ROC's Seth Horn, winning the fight via submission.
On August 29, 2009, Omar de la Cruz was promoted to brown belt under his instructor, Abraham Tabar.
On November 5, 2016, Omar de la Cruz was promoted to black belt in Brazilian Jiu-Jitsu under his instructor, Abraham Tabar.
Menne worked butterfly guard, eventually prompting de la Cruz to get up, then surprised him with vicious dropping fists from the top, causing serious damage.