In addition to the announcements of Billy in 4C and Sea Bass returning for Dumb and Dumber To, we do have some news that the movie will indeed have some new characters. Rob Riggle (21 Jump Street) has joined the sequel to play twins; "a handyman named Travis and his unstable brother, Captain Lippencott." Other actors on board to bring new characters are Laurie Holden, Kathleen Turner, and Steve Tom.
Another rumor flying around Dumb and Dumber To is that Oscar winner Jennifer Lawrence will have a cameo in the movie. Reports are Lawrence spent one day on set and is apparently playing the younger version of Kathleen Turner's character. She just happened to be in the Atlanta area as she is currently filming The Hunger Games: Mockingjay - Parts 1 & 2, so it will be interesting to see if Lawrence actually filmed or if she was just visiting.
Dumb and Dumber To tells the story of Harry and Lloyd trying to locate Harry's long lost daughter so she can hopefully donate a kidney.