Jase Dyer is a fictional character from the BBC soap opera EastEnders, played by Stephen Lord between 19 July 2007 to 29 August 2008. The character and his casting was announced on the mid-2007 on June. Lord, in his first role, began filming for EastEnders in June 2007 one month before his casting announcement, and made his first episode broadcast on 19 July 2007. The character was introduced and created by Diederick Santer the executive producer of EastEnders. Beginning in the serial on July as a man in his mid-thirties, Jase arrives as the father of Jay Brown (played by Jamie Borthwick). Jase is also described a love interest for Roxy Mitchell (Rita Simons) and Dawn Swann (Kara Tointon).
Following Jase's arrival his storylines mainly focused on him arriving and bonding with his son, being engaged to his girlfriend Dawn and his secret past, which later it is revealed he was involved in a gang and was sent to prison for his crime. Lord was nominated for the "Best Newcomer" at the 2008 British Soap Awards for his portrayal of Jase, though lost out to Coronation Street's Michelle Keegan (Tina McIntyre). In an interview Lord has described his character Jase as a "enigmatic", "a dead wrong'un" and "mystery character with a dark past". It was later confirmed on the character will leave EastEnders. The character was killed off in the serial, making his final credited appearance, (as a corpse) aired on 29 August 2008 after being subsequently murdered by his antagonistic gang leader, Terry Bates (Nicholas Ball). On Virgin Media his death was named one of the "Soaps' best storyline" in 2008.