Winner: @Eevee54
Correct Answer: Whitestorm

~~~
Sour explains my mood.
I was part of why my adopted cat was evil.
I hated kits even though I had my own.
Several moons after I died the mother of my adopted kit was revealed.
~~~

Hey guys! So I'll be updating previous riddles starting from Riddle #1 to match my current style, so if you see a spam of "NightOfFallingLeaves updated Riddle ..." don't worry!
~Night