Brando Corbin is first mentioned on June 25, 2019 by Mike Corbin. Mike mixes up Dev Cerci with Brando, the son of Mike's cousin Gladys. He says Brando's father was some deadbeat who never married Gladys and he didn't stick around.
Sonny Corinthos gets the idea to pass off Dev as Brando's son, “Devin Corbin”. Sonny tries to pay off Gladys to claim that her son Brando had a fictional wife who he married in Iraq and brought back to the U.S. where his wife died giving birth to Dev. Gladys argues that Brando died during Operation Iraqi Freedom in Iraq in 2003 and he didn't have any kids. After Sonny offers her more money, Gladys agrees to the deal.
On January 30, 2020, it is revealed that Brando is alive and he was disguised as one of Sonny's warehouse men. He is shot during a gunfight in Sonny's coffee warehouse while protecting Carly. Sonny's warehouse man Tony tells Carly that the man who saved her doesn't work for Sonny. Then Gladys comes out of hiding and recognizes her son Brando.
On January 31, as Brando recovers from his wound at General Hospital, Carly finds a picture of Gladys and Dev within Brando's belongings. On February 3, Carly tells Sonny about the picture. Gladys is questioned by Sonny and she explained that Brando was dead to her since he had gotten involved with some bad people. Brando tells Sonny that he got in a big fight with Gladys and left Bridgeport. He followed Gladys on her MyFace page and she mentioned that she was staying with Mike's son Sonny. Brando saw the Christmas picture of Gladys and her ‘grandson' Dev online. Sonny threatens Gladys about telling Brando that Dev is being passed off as his son. Later Brando asks Gladys who the boy in the picture is and she tells him Dev is his son.
Sonny gives Brando a job as a car mechanic in Johnny's old garage Xtreme Motors. His first customer is Harmony and the next one is Molly, whom he then had a one night stand with. Cyrus Renault stops by to talk to Brando about working for him and another customer Jason Morgan needs repairs on his motorcycle. After getting his bike fixed, Jason gets into an accident. Brando is blamed but it was later revealed that Cyrus was behind the accident.
Since Brando turned down Cyrus' offer to work for him, Cyrus sent two men to Brando's garage. One was Cyrus' henchman who had just sabotaged Jason's motorcycle and the other henchman was named Tommy Cordero. They took turns holding back Brando as the other one punched him in the stomach.
Tommy grabbed a wrench to finish off Brando but he is stopped by the saboteur who heard someone heading towards the garage. Tommy dropped the wrench and both men ran off before they were caught.
Spinelli had planted a camera in the garage earlier while pretending to need Brando's help. He witnessed the attack on camera along with Jason and Sam who went to bring Brando to the hospital.
Brando later made a plan with Sonny to agree to work as Cyrus' driver in order to get inside information. He brought Sasha to the hospital when she overdosed on coke that Cyrus gave her. Cyrus had wanted Brando to get rid of her body.
Brando is later informed that his ‘son' Dev has been killed after Cyrus bombed the Floating Rib with Julian's help.
When Sasha is discharged from the hospital, she tells Brando her plan to bring down Cyrus after finding more coke as evidence. He informs Cyrus that Sasha was in Cyrus' apartment looking for more coke. Sasha is mad at Brando for telling on her but Brando was just protecting her and preserving his cover.
After Sasha gets clean, she breaks up with Michael and grows closer to Brando.
On April 15, 2021, Sasha visits Brando at the Xtreme Motors Garage, where she deduces that Cyrus is blackmailing Brando into working for him using the late Dev Cerci's illegal status and his closeness to Brando. After revealing she and Michael broke up, she and Brando finally kiss and have sex in the car he is working on.
On May 19, Brando confronts Sasha about her pregnancy and she admits it is his baby. They decide he will quit his job as Cyrus' driver and they prepare to talk to Cyrus together. Brando eventually quits as Cyrus' driver and Cyrus is taken to prison.
On June 23, Brando and Sasha go on their first date at Kelly's.
In July, after Sasha told him she doesn't want her child around the mob, he decides commit himself her her, their baby, and his job at Xtreme Motors. He point-blank tells his mother he's choosing Sasha and the baby over a possible job with the Corinthos Organization. The following week, he kicks his mother out of his apartment to have room for the baby.
Got mixed up with some really bad people [2003-20; revealed on Feb 3, 2020]
Stole a check from his mother [2003; revealed on Feb 10, 2020]
Served 5 years of a 20-year prison term for an unknown crime [pre-2015; revealed on Feb 10, 2020]
Fraud; pretended to be Dev Cerci's father in order to keep Dev in the country and keep him safe [Feb 17-Nov 23, 2020; immune from prosecution]