Tina Blake is a character from the Carrie films and the novel.
Tina Blake participated in the shower prank and was punished for it, like the other girls and, though it is not specifically said, It is implied in the novel, that Tina Blake, together with Norma Watson helped in the set up of Carrie White by manipulating the elections correspondingly, so that Carrie and Tommy would be elected Prom King and Queen and placed under the buckets full of blood. They were able to do that, because they collected the ballots for the election. They survive the Black Prom, but it is implied, they live hidden from the world out of fear, their part in the conspiracy could come out.
Main article: Norma Watson (Carrie)Tina Blake in this film is a very minor non-speaking character. The role of Tina from the novel is instead combined with Norma Watson, who is played by P.J.Soles.
Norma first appears in the very first scene, playing volleyball. After Carrie loses her team the game, Norma strikes Carrie across the head with her red baseball cap (which she is never seen without for the rest of the movie), and disappears inside. Norma is one of the girls, who encounters Carrie covered in period blood, and, with Chris and another girl Sue, Norma threw tampons at Carrie. She enjoyed doing that.
Norma is next seen in a classrooms spitballing with another student. She appears to have a secret crush on Tommy Ross and is often seen smiling at him. Norma is then seen at the detention and tries to persuade Chris not to act up, as she wanted her to attend the prom. Norma is also seen doing gym with her iconic baseball cap and is shouted at by the teacher to do it properly. When Chris tries to rebel against the punihsment, she doesn´t go along with it, but she still decides to go along with the conspiracy to humiliate Carre during the prom.
At the prom, Norma was even seen collecting the ballots for prom king and queen. When she collected the one from Tommy Ross and Carrie's table, she smiled with a stranger sort of glee...until she headed to where another conspirator, FreddyDe Louis was waiting to collect her ballots. Here, Freddy dropped the collection of ballots behind Norma while she pulled out another set of "ballots" from within the former's tuxedo coat (all while kissing as a front). Anyhow, Norma approached the prom committee and handed the rigged ballots to them and afterwards, headed directly to a stairwell to give a signal to two suspicious individuals hiding under the gymnasium stage, where the prom king and queen would be crowned.
Later, after pigs blood was "mysteriously" dumped on Carrie's head, Norma was among the first to laugh at the terrible sight. She couldn't contain herself, because the plan had worked so perfectly (or so she and mostly everyone else thought).
Norma attempted to leave with Freddy and Kenny Garson, satisfied with their work, but, when Freddy and Kenny became trapped between two gym doors, Norma was heard screaming as she and another two girls were pushed and thrown around by the frantic crowd. Norma was seen running around, desperately trying to escape. When the fire hose came out of control, Norma was shocked to see it rendering many students unconscious or killed. Norma tried to escape the blast of the fire hose, but it hit her harder than anyone as she fell on top of a table, killing her. It is likely, Norma´s body was burned, when Carrie ignited the fire in the gym. which destroyed the High School.