Rick DeGroot was a pimp in Metropolis in the CW TV series Smallville. He served as the main antagonist in the Season Nine episode "Crossfire".
He was portrayed by Michael Adamthwaite who played Andy Connors in the same series, Sargeant Night in Mega Man: Fully Charged, Ribbons Almark in Mobile Suit Gundam 00, Byakuya in Inuyasha: The Final Act, Ginji Matsuzaki in Black Lagoon, one of the Giants in The BFG and the Skull Of Hazza D'ur in Master of the Mountain of LEGO Ninjago: Masters of Spinjitzu.
Rick was Mia Dearden's pimp and forced her to be a fighter. Mia was fighting in an underground fight club when she was suddenly forced to leave by Rick. She notices the Beretta in his waistband and they argue for a minute about her running away from him, then he leads her out of the ring while Oliver Queen looks on.
He also forced Mia into prostitution and she walked the streets so she could pay what she owed to him. Oliver met Mia on the street and made a proposal to make her a better fighter and get out of her life on the streets. At first she was reluctant to the idea, but ended up accepting. Oliver turned her into his driver and then, she stole his car to pay back Rick in exchange for her freedom, but he was unwilling to let her go.
He wanted more and told Mia that he didn't want to let her go as she was his best employee and required her to reveal Oliver's location. Rick forced her to help him kidnap Oliver and inadvertently, Lois as well. She fought against Rick and his thugs. Mia kicked the pistol from the Rick's hand and catches it in mid-air, turning on him to save Lois.
Mia finds that she was unable to pull the trigger, Rick took the pistol back and knocked Mia unconscious. Oliver got out of the car and he and Lois took out the men, escaping into a nearby alley with Rick in pursuit. Overhearing the gunfire from Lois' headphone, Clark super speeds to the scene arriving just in time to step in between the gun-toting Rick and Oliver. Clark melts the gun with his heat vision and just barely caught a stray bullet before it hit Oliver's head.
Rick's stay in prison was short lived as he later appeared as a subject of Maxwell Lord's, as he was one to have caught a glimpse of The Blur when he tried to kill Lois and Oliver. Lord hoped to use Rick and others to figure out what The Blur looked like.