Jeremy Irons is back as Alfred Pennyworth in DC's The Flash. In the film, Batman's best ally reluctantly becomes Barry's guy-in-the-chair, using snarky comments to remind the younger hero that he's Batman's helper, not the Flash's. Irons' performance is as iconic as ever, and he matches the film's hilarious tone while still carrying Alfred's seriousness. However, he isn't the only actor to excel at this role.
Source:https://www.cbr.com/x-best-live-action-alfred-pennyworth-actors-ranked/