Rigby: "What happened to you, man? How can you work for him!?" Mordecai: "I couldn't stay at the park forever! I have to think of my career!" Rigby: "How about your friends?" Mordecai: "We're not friends! We haven't been friends for a long time!"
~ Future Mordecai and Future Rigby about the former's actions.
Future Mordecai is the secondary antagonist of the 2015 Warner Bros and Cartoon Network animated feature; Regular Show: The Movie.
He is the future counterpart of the original Mordecai who joined Mr. Ross's force after being lied to about not going to College University by Rigby and decided to take revenge.
Future Mordecai looks pretty much like Mordecai but with a few changes. He looks around 7–10 years older than the present Mordecai, judging by the bags under his eyes. He has spiky hair, somewhat a beard, black armor, a dark purple cape, and his most notable change is his left robotic arm.
In Regular Show: The Movie, Future Mordecai killed Future Rigby in anger once their former science teacher Mr. Ross informed him how Rigby forged a fake letter from College University denying Mordecai's application just so they would remain as friends. Once Mordecai learned the truth, he became outraged by this and joined Mr. Ross' criminal empire and turned against his own friends since he would have had a better career and life if he was in College University.
A high school lab experiment went horribly wrong and accidentally created a Timenado and is on the verge of destroying the universe. Mordecai and Rigby go back in time as well as Pops, Skips, Benson, Muscle Man, and Hi Five Ghost just to stop this. However, Future Mordecai and Mr. Ross showed up to stop them later in the high school where they were trying to disable the time machine that Mordecai and Rigby's high school selves created.
But after listening to Rigby's brutally honest rejection letter from College U, Future Mordecai has a change of heart and ends up sacrificing himself in order to protect Mordecai when Mr. Ross was about to kill him. Before Future Mordecai died, he confessed to Mordecai that he would have been a lot better off having friends instead of being successful.
Once Mordecai forgives Rigby and helps him destroy Mr. Ross and the Timenado, Future Mordecai and Future Rigby are erased from existence now that they won’t become enemies in the future.
Ceasefire! Rigby and Benson, you're outnumbered! Dude, you can totally stop this bloodshed! Give up!
~ Future Mordecai telling Rigby and Benson to surrender.
I know what you did Rigby and I'll never forgive you!
~ Mordecai yelling at Rigby in vengeance.
It was all a waste, Mordecai. I sold us out. I climbed the evil corporate ladder, I had an evil six-figure salary, and even bought an evil condo in Maui; right on the beach. Ugh, and for what? No family, no friends. Work isn't everything. It's not worth shooting your best friend over, I'll tell you that. Truth is... Ugh... Right now, I'd trade in my life for an afternoon playing video games with my bro. (Coughs) The future is in your hands...