In Demon Slayer, the Twelve Kizuki are ranked based on their strength and their unique Blood Demon Arts.
Enmu
Despite his powerful dream manipulation, Enmu ultimately failed, as Tanjiro's mental strength proved stronger than his Blood Demon Art.
Gyokko
Gyokko is one of the most twisted and disturbing demons in Demon Slayer. His obsession with turning human bodies into art is truly horrifying.
Daki
In the Entertainment District arc, the Sound Hashira, along with Tanjiro and his allies, faced the dual threat of Gyutaro and Daki.
Gyutaro
Despite being the lowest-ranking Upper-Rank demon, Gyutaro and Daki still posed a significant threat, though there was always a fighting chance against them.
Hantengu
Hantengu possesses a unique Blood Demon Art that harnesses his powerful emotions as weapons. By projecting a specific emotion.
Kaigaku
After the deaths of Daki and Gyutaro, the vacant position of Upper Rank 6 was filled by Kaigaku. He quickly proved himself worthy of the title.