In Super Street Fighter IV, Hugo from Final Fight can be seen in the background in the Metro City stage, 'Skyscraper Under Construction'. When the Ultra Street Fighter IV announcement trailer was released, two Hugos could be seen together both in playable form and in the background. This was later fixed in the final version, if the player selects Hugo to play in 'Skyscraper Under Construction', the other Hugo in the background is replaced by a different character.

Decapre's 10th character action is identical to Muhammad Avdol's "Yes! I am!" pose from JoJo's Bizarre Adventure.