I dunno. I think there might be one centric on Jekyll–why he chose to experiment with that serum, whatever tragic backstory led to his desire to rid himself of his baser desires. That’s typically how A and E go; all arc villains, or even characters around for a shorter period, get some sort of background and context for why they are appearing on the show.
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"He was a lot of things to me" "The only conclusion was love"