Robin Williams is in negotiations to reprise his role of Teddy Roosevelt in Shawn Levy's "Night at the Museum 3" at 20th Century Fox.
Williams played the former U.S. President in both of the first two 'Museum' films and will carry that character over to the London-setting of the third film.
Ben Stiller returns as security guard Larry Daley, though it's unsure at this time what other actors will return for the next film.
Shooting begins February 2013.
Source: Heat Vision