A deadly reminder that there is a reason Khai (Fire wolf prince) will not go into his original (fire wolf) form.
While in this form he is completely different then his normal sweet self. He would be highly considered a villain. With his pack at his side he could set a firey destruction of Ooo. A bad encounter had happened a while go that made Khai go into hiding, afraid that he would harm or even kill more people. Anger is the only way he could transform back, since he would never dream of going back to that on his own. He has no sense of control when like this and when he is mad. Reason being why turns back.
Now dont worry he has more control over his anger now then he use to due to the past horror events. No need to fret, but to keep in mind why he is in the form he is in today.