The repulsor is the signature palm weapon of Iron Man, created for Marvel Comics and brought to life as a glowing energy projector in the armour worn by Tony Stark. The 2008 Iron Man film and its sequels in the Marvel Cinematic Universe made the charging blast a recognisable part of the character, with later films and animated series reusing similar whines and pulses. Clips of the effect spread on soundboards and in fan edits, where it is now used as a shorthand for advanced technology, powered armour and a superhero attack charging up.