“Kaizen” is the Japanese symbol for “change for the better.” The name “Kai” means change in Japanese. Kai tried to change the world. Thunderbird is the house of change. Kai is the Thunderbird. I just researched more of Thunderbird’s traits and I agree with you; Thunderbird is definitely the closest match to Kai’s personality. Kai is a Slytherin/Thunderbird for sure.
My Type is Homicidal 