So one of the perks of being in a romantic relationship are the matching costumes, right? Well I'm gonna give some headcanons for possible couple/poly group themed costumes for my otps Dave/Jade/Karkat: one of them gets to pick the theme costume. One year when it's Dave's turn, he suggests they go as Shrek (Karkat), Fiona (Jade), and Donkey (Dave). John doesn't shut up about the implication that Donkey is having threesomes with Shrek and Fiona. Dave explains they planned the costumes back when they thought Terezi would be tagging along as Dragon. Another year, Jade picks wizard of oz themed costumes for them. She's Dorothy, Karkat is the Tinman, and Dave graciously agrees to be the Scarecrow (+ Nepeta/Terezi bonus: Nepeta would be the Cowardly Lion and Terezi the Wicked Witch) Rose/Kanaya: These two always have a fun time picking matching costumes. One year, Rose goes as a witch and Kanaya as her black cat. Another year, Kanaya goes as Spike and Rose as Buffy. Gamzee/Tavros/Jane: The three of them prefer costumes that aren't too scary. Tavros almost always insists on being Pupa Pan. That leaves Gamzee to be Tinkerbell and Jane to dress up as Captain Hook. (Because fuck gender roles, that's why.)