In Nordic subtitles for this film, the name of Laufey has been changed to Leifur, since In Norse mythology (and thus, Nordic languages), the name Laufey is feminine and is the name of Loki's mother.
The version of the film shows in AMC Theaters as part of a pre-Avengers Marvel Phase One marathon features an exclusive intro from Agent Coulson, talking about the film and the character. These Coulson intros were later includes as bonuses in the Avengers Phase One box set.