if the mako island girls had to dress up for Halloween Cleo would dress up as a witch, Emma would be forced to dress up as a pirate by her family because they would do family costumes, and Rikki would put on some kind of scary mask. BUT!!!!!! if it were a Halloween episode where the full moon was up, they'd end up accidentally looking at it and 'dress' up like mermaids/sirens and would be under the influence to drag boys around town to the sea. #CANON! (in another universe they'd also go as the Henderson sisters from Hocus Pocus)