Actor Stephen Aaron-Sipple has been confirmed to be cast as Mark Fowler Jr in EastEnders. The BBC One soap is set to reintroduce the son of Michelle Fowler and Grant Mitchell later this month, with Aaron-Sipple having joined the cast in October 2025 and having made his first appearance as Mark in the New Year’s Day episode, which was a flash-forward to 2027. In the flash-forward, viewers saw Aaron-Sipple’s mystery character -credited as ‘Man’ – briefly interacting with the Beale and Branning clans. The character will return to Walford in 2026 and be reunited with his half-sister, Vicki Fowler (Alice Haig). As a result of his heritage, Mark is also a blood relative of the Beale clans and the Mitchells currently on Albert Square – including uncle Phil Mitchell (Steve McFadden) and aunt Sam Mitchell (Kim Medcalf). The role of Mark Fowler Jr was originated by actor Ned Porteous for a few weeks in 2016, with Porteous currently seen in his longer-running role as Joe Tate in ITV soap Emmerdale. New actor Stephen Aaron-Sipple said …