Lydia is a witch who visited the SOL during Experiment 806 The Undead. She was played by Bridget Jones. In the film, she has the ability to turn into a bat, however in the SOL her powers are a bit more...erratic. She has shown to turn (briefly) into a cat, a crow, a bat, a signed football, an inflatable penguin, a very confused Pearl Forrester (which scared Crow), and a bottle of bleach. Unfortunately, once she became a bottle of bleach, she got stuck and couldn't change back. Each time, she expressed confusion and frustration at the range of her sudden changes, having "never been a football before", and being "a little bit rusty".