I don't have the resources to create cosplay outfits for these characters but here's the ones I'd do and their songs. I'm not including a link to the songs if they were already mentioned in that character's theme songs.
Abel: blonde hair, gray shirt, sweatpants, maybe some light makeup for special effects.
Songs: Believer by Imagine Dragons, iRobot by Jon Bellion, White Flag by Bishop Briggs, and Wolf in Sheep's Clothing by Set it Off
Riko: Black hair(short), blue or black body suit, maybe a nerf blaster, makeup
Songs: Radioactive by Imagine Dragons, If I Die Young by the Band Perry (nightcore), and Ninjari Bang Bang (I don't know how to spell the artist's name)
Virginia: long auburn hair, black body suit with armor, nerf blaster, and makeup
Songs: Feel it Still by Portugal the Man, One Woman Army by Porcelain Black, Take it Off by Kesha, Die Young by Kesha, Ways to be Wicked by the Descendants Cast, and Carameldansen by the Caramella Girls
And lastly Noemi: long black hair (to make her look different than Riko), green body suit with armor, nerf blaster, and makeup
Songs: Starships by Nicki Minaj(clean) and ET by Katy Perry
BONUS!
Simon: long messy red hair, robot makeup, some wires added in the face and arms
Songs: Unfixable by DAGames, Little Game by Benny, Masky song by Dark Zero
All 5: Choqiwa by Super Junior
YOU ARE READING
Constellation by Claudia Gray character theme songs
Science FictionI'm OBSESSED with this book series. These are the characters theme songs in my opinion , both living and dead.