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Marvin Thomas is a main character on the Starz original crime drama Power Book III: Raising Kanan. He is portrayed by London Brown. Marvin is Lou-Lou and Raq's older brother, also the father of Jukebox and uncle to Kanan.

Marvin appears as one of the deuteragonists in season 1-3. He was also mentioned in Power season 3.

Marvin is the muscle for Raq's drug organization. What he lacks in smarts, he makes up for in volatile aggression. A hothead who is quick to spring to a fight. He's a mainstay of the family business, and as such, freely asserts his opinions on how to run things – though his ideas are typically dismissed by his smarter, shrewder younger siblings. His quick temper and loud personality make it difficult for his daughter Jukebox to connect with him, not that he would even notice her attempts.

At an unknown point, Marvin's parents began using drugs and became neglectful. As the oldest, he took it upon himself to raise his sister Raq and brother Lou-Lou until his parents got clean. To that end, he turned to a life of crime to help the family get by.

Upon reaching adulthood, Marvin and his siblings decided to build a criminal organization. As the oldest, he was the leader and Raq served as his lieutenant and gave him advice on business ventures. He later got into a relationship with a woman named Kenya Pierce who gave birth to their daughter LaVerne but their relationship fell through when she left to pursue her dreams, leaving him in the care of the infant. Eventually, he smoked his own stuff and became addicted to the point, where he got himself arrested and landed in prison, leaving Raq no choice but to completely take over for him in the business and caring for his daughter. Upon release and getting clean, Marvin was forced to accept Raq as the new leader whether he liked it or not. Marvin then settled for being the muscle.

During Reaping and Sowing, Marvin meets with Symphony and tells him that he is aware of his interest in Raquel. After a tense talk, Marvin tells him that he is only making sure that Symphony has his sister's interest in heart and compliments him on holding his own.

During The Cost of Business, Marvin goes to see his brother and finds his home on fire. He quickly rushes in to save Lou, with the latter barely conscious but alive.

In Loyal To The End, as a result of his brother's injuries, Marvin planned

He discovers a tape of Juke and Nicole, playing it to discover them singing together in a loving way, realizing that Juke was a lesbian. This left him shocked

During No Love Lost, he is dismayed to hear that Marco Boselli was killed after getting rid of Toni and Unique warned him that he better hope he finds Marco's partner before the Boselli patriarch learn of his part. Marvin later finds Juke burning gifts from her mother and is finally able to talk after she reveals her mother and the church attempted to perform extreme conversion on her. This leads to Marvin confronting Juke's mother and telling her to stay away.

In the finale, he is prepared for war when Sal Boselli sent goons after him. Marvin took down several of them, though got wounded in the end. Marvin barely stumbled through the building until he found himself trapped and heard the goons closing in. However, one of tenants alerted him and told him to come hide in his apartment quick. Marvin did so and was able to escape his enemies, surviving the night.

The wounded Marvin got out of the complex because of a friend and his wound was revealed to be through and through. Marvin soon patched himself up and disposed of evidence. He reconvened at Raq's house, where he was saddened to hear Kenya was killed in the crossfire. When he noticed Kanan and Raq's distance, he was confused and questioned her with Raq preparing to tell him. He was then shocked to hear that Raq lied about Def Con being Kanan's father and that the real father is Howard. Marvin learns that she hadn't told Lou.

Marvin started to bond with his daughter, by being there for her ndi