Miss Margaret Skullnick is one of Star Butterfly and Marco Diaz's teachers at Echo Creek Academy. Originally a human, she was accidentally turned into a troll by Star 

Type of voice = normal MIss Skullnick's voice ----> Example

Personality

She appears to have a short temper and does not take her job very seriously; in her first appearance, she paints her toenails during class, leaving her students to do nothing. After being transformed into a troll and falling out of love, she only seemed to have become even grumpier and more sarcastic. Miss Skullnick openly admits to having a dim view of fun, believing that a lack of rules and order leads to anarchy.