The Alliance of Super Girls
Penelope has a role as a murder victim in the special, Twin Geeks!, a parody/homage to cult TV show, Twin Peaks playing the Laura Palmer role. She also will plan to appear in The Alliance Presents: The Alliance Halloween Scarathon! in the final story, Mega Pumpkin.
In addition to those, she'll appear at the end of another Season 3 episode, Camp Classic.
Penelope makes an appearance in this series. However, it is unknown if she will play a major role in the series.