Tigerstar became evil for several reasons. One of them is probably because he was the weakest of his litter, which made him desparate to prove himself strong when he was still a kit. Later he was apprenticed to Thistleclaw, who was an aggressive warrior who influenced Tigerstar.
No, Lionpaw does not become like Tigerstar. While Lionblaze, as he is later known, does inherit some of Tigerstar's traits due to their blood relation, he ultimately chooses to fight against his dark instincts and becomes a noble and loyal warrior of ThunderClan.
Tigerstar trained Lionblaze in the Dark Forest, manipulating him to become a powerful warrior with dark intentions. Tigerstar exploited Lionblaze's potential and desire for power to further his own evil plans.
Not evil exactly. To be leader of all Clans, but not evil.
No. He was only afraid of Brokenstar and Tigerstar.
He tried, but Lionblaze pretty much killed Tigerstar again. Lionblaze is completely good, and is a better fighter than tigerstar.
Yes. He used to learn from Tigerstar, but then he learned that Tigerstar really was EVIL, so he rejected and fought him. He still visits Lionblaze in his dreams, though.
Pretty much yes.
She believes he is evil and ambitious like his father, Tigerstar.
No he became leader of ShadowClan.
No, spottedleaf was daughter of dappletail and someone else and tigerstar was kit of leopardfoot and pinestar who left to become a kittypet.
Well there many the main one is tigerstar and all his follower in the dark forest
Hawkfrost knew that his father was Tigerstar because Sasha told him and Mothpaw(wing) that Tigerstar was their father. And then Tigerstar probably just started to visit Hawkfrost and that is how he turned out to be so evil.