Dawson Casting: Played straight with Jennifer Lawrence, Josh Hutcherson, and Liam Hemsworth, who are in their early 20s and play 17-year-olds (19-year-old in the case of Hemsworth's character). Averted with Sam Claflin, who's close to Finnick's age, and, like the first film, inverted with Prim, whose actress, Willow Shields, is a year younger (12) than her (13). Zig-zagged with Jena Malone, who was in her late 20s playing a character in her early 20s.
Sam Claflin has seriously put on muscle for his role as Finnick.
Jennifer Lawrence, who had plain brown hair in the first movie, had her hair dyed black for Catching Fire, which is closer to Katniss' physical description in the books. Her skin also looks noticeably tanned in certain scenes, compared to the first film. note In the books, Katniss was Ambiguously Brown, and her being played by wholly Caucasian Jennifer Lawrence caused quite a few outcries of whitewashing.
Liam Hemsworth and Josh Hutcherson also both dyed their hair again for their roles.
Fan Nickname: The appearance of the white-haired, bearded Donald Sutherland in winter scenes has now led to fans referring to Snow as President Santa Claus, or Evil Santa.
Fake American: Brit Sam Claflin as Finnick, and also Aussie Liam Hemsworth as Gale.