YX has no special costume - like a chinese hero in an old action movie he is one of the every day people who suddenly bust out their incredible powers to protect their citizens/friends/etc!
SJ, as the one who sings opera piecers to animals to communicate with them, actually doesn’t really need a costume, as this one has zero purpose and you could easily mistake him as some aerobic tv star from the 90ies.But he really likes the “flashy and dashing” design.
SY (Sand boy) and WH (Aqua Boy) have matching suits and wear tiny palmtrees on their head to signify their connection to the beach. Don’t touch them! that’s where their superpowers are hidden… and they look really funny with them lmao
ANOTHER reason why yb struggles to use his powers is because his hair always does…this…when he gets on it…it’s alright yibo. when he beatboxes for full 5mins he’ll stand there in whole magical girl garnment. you are welcome.