Yanik Arc'Thulu is a Monk who spent hundereds of years meditation in the fridget depths at the bottom of the ocean. During their meditatiove state they heard the voice of an ancient spirit of the deep. This entity bestowed upon them the secrets hidden at the end of the abbys and entrusted Yankic with the dutie to protect this knowledge also granting them the power of the frozen depths itself in the form of an ice kunai❄. Yanik does visit the surface world to keep up to date with the ways and happenings of the humans above but more impostantly, to procude his favorite food and weapon of choice "The Potato Chip" Yanik loves munching on a bag of chips and also uses them as shuriken that are embued with their frost abilitys(thats why they dont get soggy under water)
So if you ever find yourselves at the bottom of the ocean amongst Davy Jones Locker beware of the monk who keeps an ever watchful eye to protect secrets far beyond the imagination of any mortal soul.