Stephen "Steve" Coyne was an antagonist in the video game Mafia II, notable for murdering the main protagonist's father via drowning.Steve Coyne is an Enforcer for the Vinci crime family. Steve grew up in rural Birkland, moving to the city at the age of sixteen. While being arrested for battery, Steve badly beat an EBPD officer and was sentenced to ten years, of which he served five. It was in prison that he started working as muscle for fellow inmate Derek Pappalardo, a relationship that continues on the outside. Steve can never be a full member due to his Dutch-Irish heritage, but became the family's most trusted associate after he assassinated rival boss Tomaso Moretti to end the Empire Bay mob war.