What are you on about? All of you, I can tell none of you grew up in the 80s. The 80s we had... Back to the Furture, go as McFly or Doc. Karate Kid Anything for Star Wars Revenge of the Nerds Ghostbusters Indiana Jones Top Gun Die Hard ET (lol I don't know how you'd do it but maybe just put an ET head on your head?) Jaws The Revenge (go as a shark) Rocky from Rocky 3 Superman from superman 2 I dunno, I love 80s movies, I guess I'd either go as a Nerd from Revenge of the Nerds or Ghostbusters and get one of those supersoaker backpack and put paper round it, and then you'd have a water pistol to shoot people, or put alcohol in it for a laugh. Yeah I think Ghostbusters if you can do it. Or a Nerd, nerds are funny. Edit: I just assumed you meant it had to be a movie but if not how about cartoon characters, the 80s gave us the best cartoon character ever such as Thundercats but for a fancy dress how about Dangermouse or Bananaman. I'm sure you can find a picture online. Or we had the A-Team, go as Mr.T and walk round with a glass of milk, dunno if they captured this is the new film but Mr.T likes milk.