Nicola Skelly, under the nickname of Nasty Nicola is a new girl who joined Horrid Henry's class in Horrid Henry and the New Best Friend. She tries to get Henry into trouble by telling him to hide behind the bins when playing hide and seek and leaving him at the end of break, picking one of Miss Oddbod's prized petunias and telling her that Henry told her to. She also took Henry's lunchbox and put other people's food in it to make it look like he stole it.