Legendary pansexual icon and Scottish–American actor, Alan, belongs in this franchise! I could see him in a Filch-like role, or even as a wise retired professor Harry goes to advice for, or maybe even an auror! I want some Alan Cumming energy in the Harry Potter films and I won’t apologise for it.
Where you know him from: Spice World, The Good Wife, the Spy Kids trilogy.
Possible role(s): Frank Longbottom – Alice’s huband, Neville’s dad, and a fellow auror who also lives permanently in St Mungo’s. Orrrr Morfin Gaunt, Voldemort’s wicked uncle who is also a parseltongue.