They have a memory that they had been attacked by Hikiko-san. By the way, there is a rumoor that Kuchisake-onna has been imprisoned in the hospital where they were hospitalized.
Sabliris gets Steel and Ghost typing, inspired by bismuth crystals, while Mawilder is Dark and Fairy, inspired by Kuchisake-onna. It is unlikely for Mawile and Sableye to get traditional evolutions.