If you and your group are fans of all things winter, dress up as snowflakes. This idea is especially useful when your crew is exceptionally large, since everyone doesn't need to necessarily match. Each person needs an all-white outfit and an adorable snowflake accessory, like a headband. Alternatively, you can wear a jeweled tiara or hair clips. There's a lot of room for personalization here, so don't be afraid to get creative!
If a couple dozen Marvel films weren't enough for you, we have good news. There isn't a better place to look when you need to find a group of 5 Halloween costumes that will scratch your superpowered itch. All you need to decide is which Avengers character everyone will be! Remember, whosoever is worthy gets to become Thor. And if you can't decide who gets to dress as Iron Man, you can take comfort in the fact that Stark has a lot of different suits to pick!