Estal

Estal is the Damsel that Donald uses to find crime. He met her originally when he got fired from his job and was in an alley when two men tried to mug her. He saved her, killing one man who he brought back with lightning used as a defibrillator. That man was Greg, who became a supporting character later in the series when he reunites with Estal and Mr. Dr. Electron. In one universe, the unexpected danger that she was waiting for was Donald asking her out. When, in episode eight, Jonas goes back in time, the universe changes and the danger becomes the rug in the foursome's apartment. In the first world, the unexpected hero is Greg, and in the altered timeline, it's Virginia.