Astrael
History
She lived in a cave in Monster Island. Viper X was doing some experiments so he wanted to test them out, so Viper captured animals. He took Astrael's whole family and put them in a cage.
Viper X's scientist (Dr. Von Schultz) took Astrael and her brother (Aiden) and he tied them up. He was about to inject her first so she broke through the rope and freed her brother. They ran around the room and she accidently knocked over a shelf full of experiments that landed on them. They climbed over the shelf but before they left, Astrael promised she'd help her family, but she never got the chance. After they escaped through the open window, they saw the buildling explode. I thought my family were dead but I saw them run into the woods. The next day, me and my brother were standing up, like humans! Aiden swore he'd get revenge on Viper, but he lost his mind and became a villain instead