We last saw Livewire back in season 1, when belligerent CatCo employee Leslie Willis transformed into the villain after a horrible accident and sought vengeance against Cat Grant.
She then reappeared later in the season in an attempt to mentor fellow villain Banshee, with both facing off against Supergirl and The Flash in their first crossover episode.
At the conclusion of that episode, Barry constructed metahuman-proof containment units, which is where Livewire has been all these months, but it looks like she’s found a way out.
No matter what, Supergirl is bound to keep fans hanging on with its lovable characters and Buffy-esque endearing corniness.
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Supergirl 2x10 Promo "We Can Be Heroes" (HD) Season 2 Episode 10 Promo