Despite first appearing in Super Punch-Out!! for the arcade, Soda Popinski is grouped with the boxers that debuted in the NES installment. This is likely because he was named “Vodka Drunkenski” in the arcade.
Disco Kid and Aran Ryan are the only boxers from the Wii Punch-Out!! game to not have a spirit in Super Smash Bros. Ultimate.
Likewise, Mike Tyson and Mr. Dream are the only boxers from the NES Punch-Out!! to not have a spirit in Ultimate, likely because they did not appear in the Wii Punch-Out!!, which is where the spirit artwork is taken from, as well as that Nintendo’s license to use Mike Tyson’s likeness expired.