Snowy

Snowy is a monster, who is related to Katie, and his last name is Frostkid. He is pure monster, and his parents are a human and a monster. He can control Ice and Snow, For example when he freezes water by barely touching it and Making a blizzard when enraged, as shown in The Adventures of snow episodes 3 and 8. His age is 15, and his sister Katie, is 17. Not much is known, other than he gets his classmates in trouble with his "Adventures".