Buffy The Vampire Slayer

In season six of "Buffy the Vampire Slayer," Willow Rosenberg gives in to dark magic.

Earlier in the season, she demonstrated a flair for tinkering with time and dimensions.

In the end, she flayed someone alive before trying to channel energy that would destroy the world.

In addition to her immense power, Willow is unpredictable and grief-stricken, which would make her a formidable and reckless opponent.

Most likely, Xander, often portrayed as the most useless member of the Scooby gang, would have to come to Superman’s rescue.

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