Penelope Spectra

Information
Penelope Spectra is an antagonist in Danny Phantom and a currently reforming antagonist in Multiversal Madness. It should be noted she's not the "Prime" version, and instead comes from Elvira's timeline. While she has a few counterparts in other universes, she comes from an alternate timeline in the same universe prime exists in. Therefore, she's the closest to the prime in personality and backstory.