Continuity mistake: When everyone is being scanned by the machine that determines who stays on Earth and who gets evacuated, the machine approves Amy, saying that they were in the same sorority and they do a "Sigma Beta" dance. In the first episode, Amy says that her sorority is Kappa Kappa Wong.
Continuity mistake: Hermes begins to tie the thing around his neck. One half of the cloth is around his neck whilst the other half is on his shirt collar. He ties it and the half of the cloth around his shirt collar has gone to his neck despite never touching it.