<Li> Dan Stevens as Sir Lancelot, the wax statue of the legendary Knight of the Round Table . </Li> <Li> Rebel Wilson as Tilly, the night security guard at the British Museum . </Li> <Li> Skyler Gisondo as Nick Daley, the son of Larry Daley . He was previously played by Jake Cherry in the first two films . </Li> <Li> Rami Malek as Ahkmenrah, the mummy of an ancient pharaoh . </Li>

Who plays larry's son in night at the museum