Popsugar Entertainment Halloween Costumes 2018 Superhero Costume Ideas 2018 Get Ready to Save the Day With One of These 50 Superhero Halloween Costume Ideas 24 October 2018 by Mekishana Pierre View On One Page Photo 39 of 50 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 39 Mantis From Avengers: Infinity War What to wear: A pair of flesh-coloured antennae on your head, a black wig, and a metallic green minidress. Previous Next Start Slideshow Halloween Costumes 2018DCJustice LeaguePop Culture Halloween CostumesMarvelBlack PantherMoviesThe AvengersTV