Johnny Tran in The Fast And The Furious. The first villain of the Fast franchise crosses a line when he shoots at Dom and his family, and this betrayal stands as his greatest act of villainy.
DK Takashi in The Fast And The Furious: Tokyo Drift. He is repeatedly portrayed as a spoiled brat riding the coattails of his accomplished uncle.
Deckard Shaw in Furious 7. The cheeky yet deadly Shaw spends the 7th film exacting revenge on Dom and the crew for almost killing his younger brother, Owen.
Jakob Toretto in F9. It seems that Jakob's twisted jealousy of Dom will push him to become an irredeemable monster.
Owen Shaw in Fast & Furious 6. Owen Shaw places as the villain with the evilest scheme because there are no ifs, and, or buts about the super-weapon he seeks to wield.
Brixton Lore in Fast & Furious Presents Hobbs & Shaw. Brixton Lore wants to unleash a virus to wipe out half of the human population, but not in the indiscriminate way Thanos would approve of.
Carter Verone in 2 Fast 2 Furious. he's certainly no criminal mastermind, Verone stands apart from Takashi for the simple fact that he at least seems in charge of his own operation.
Arturo Braga in Fast & Furious. Braga is responsible for one of the most emotional and tragic moments in the Fast & Furious series.
Hernan Reyes in Fast Five. He uses his status as a Brazilian politician to aid in his drug-dealing criminal enterprises.