Sonny Valentine is a fictional character from the British Channel 4 soap opera Hollyoaks, played by Aaron Fontaine.

"[2] Full details of Sonny's return storyline were initially kept secret, but it was said that he would shake up life for the McQueen family.

Unknown to his mother Diane Valentine (Pauline Black), Sonny deals in illegal goods which helps him buy branded clothing.

He begins skipping school to work for Warren Fox (Jamie Lomas) at The Loft with Justin, earning £100 for several tasks, but Calvin finds out and gives Sonny an ultimatum to stay at home or leave the house.

Sonny begins dating his sister Sasha's (Nathalie Emmanuel) best friend, Michaela McQueen (Hollie-Jay Bowes), but they do not tell anyone about their relationship.

Sonny, now played by Aaron Fontaine, returns when his former sister-in-law Carmel Valentine (Gemma Merna) contacts him and tells him that his niece Kathleen-Angel (Nieve Grandison) is not safe with her mother, Theresa McQueen (Jorgie Porter).

When Carmel finds out, she confronts Sonny and he asks her to make a full written statement saying that Theresa killed Calvin, but she refuses.

When Sonny's superior, Sam Lomax (Lizzie Roper), is demoted to Detective Sergeant and is later killed in a car accident with her husband Danny Lomax (Stephen Billington), Sonny is promoted to Detective Inspector and leads the case into the deaths of Sam and Danny.

It is revealed that Sonny is a bent copper and that he is working on both sides of the law, being paid by Grace Black (Tamara Wall) to set Big Bob (Vincent Ebrahim) up on a false charge.

Myra, Mercedes and Phoebe McQueen (Mandip Gill) handcuff Sonny in his car and drive him to a lake.

When the McQueens are discussing what to do, Myra forgets to put the handbrake on and the car rolls into the lake with Sonny inside.

When Carmel fails to do so at Porsche McQueen's (Twinnie Lee Moore) wedding reception on a party train, Sonny lashes out and verbally abuses her.

However, the train derails when it crashes into Sienna Blake's (Anna Passey) car, leaving Sonny unconscious.