He can never be considered a good person but he did fight for the Order of the Phoenix rather than the Death Eaters.
Not really. Harry Potter hated Severus Snape until after his death when his true nature was revealed.
no
Alan Rickman plays Severus Snape in the Harry Potter movies.
Alec Hopkins plays teenage Snape in the flashbacks in Harry Potter and the Order of the Phoenix. Whether he will play young Snape again in Harry Potter and the Deathly Hallows, I am not sure.
Severus Snape teaches Potions class.
nobody in harry potter are called seravina snape but there is Severus Snape, who is portrayed by Alan Rickman :)
Severus Snape.
Severus Snape.
Severus Snape was headmaster in book seven: Harry Potter and the Deathly Hallows.
Severus Snape.
Severus Snape.
A ficticious person. He teaches Potions at Hogwarts School, in the Harry Potter stories.