In the beginning of the film Dennis and Frank's little boys comment on how Australia looks like the USA upside down. A large theme of the film is reverse. The reversal of Dennis's role from evicted to evictee, and also on how the American moral system is completely upside down.
Michael Shannon and Andrew Garfield have both played famous comic book characters. Shannon portrayed DC Comics character General Zod in "Man of Steel" (2013) and "Batman V Superman: Dawn of Justice" (2016). Garfield played Marvel Comics character Peter Parker/Spider-Man in "The Amazing Spider-Man" (2012) and its 2014 sequel. Both actors are Oscar nominees as well.