Russell "Russ" Posner is the estranged ex-husband of Wendy Posner, father of Luke and the late Lee, and grandfather of Harry Sugden.
Russ' mother, whom he was estranged from, died in August 2021. He was incensed to discover she'd left most of her money - to the tune of £50,000 - to great-grandson Harry, so Russ showed up in Emmerdale to confront Wendy over the matter.