I just noticed:TIGERSTAR causes the death of my TWO FAVORITE CATS. One:Scourge. HE made Scourge evil, and that led Scourge to his death. Second:RussetFur was killed in a battle HE started. So now, I don't hate LionBlaze anymore. TIGERSTAR, I HATE YOU SOOOOOOOOOOOOO MUCH
I don't think he was born evil, If Thisteclaw was never his mentor or never born, Tigerpaw would never be Tigerstar. And, maybe another part of why he turned evil, was because his father. Because his father was a kittypet, so maybe he wanted to prove that he was tough and not weak like a kittypet.