Domhnall Gleeson and Brendan Gleeson
Alastor “The Terrible Eye” Moody, played by Irish actor Brendan Gleeson in Harry Potter and the Goblet of Fire decided to bring his son Domhnall to the set of the Potter series. The father and his son appeared together in the first part of Harry Potter and the Deathly Hallows. In the movie, Domhnall played the role of Bill Weasley that brought him popularity and the love of fans from all around the world.
Will Smith's kid has been pushed so hard by his father...given all kinds of acting roles and he's still not considered a real actor.