Rourke helped design Vanko’s many tattoos, collected over his years in a Russian prison. This caused a minor kerfuffle after the movie was cut together and Feige noticed a tattoo on Vanko’s neck that read “LOKI.” Favreau explained it wasn’t an allusion to the antagonist in the upcoming Thor movie, but a tribute to one of Rourke’s dogs, which had died just before filming started. Feige insisted that the tattoo couldn’t appear in the movie—it would be confusing to audiences—so the visual effects team had to erase the tattoo digitally in each of Vanko’s scenes (although eagle-eyed fans
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