Good thing that technology villain I forgot to write a couple months ago happens to fit here too.
Lampyridae
It started with a problem, and a solution.
In the wake of OblivAeon, when Megalopolis was facing its energy crisis, Isabell Klein, full-time science teacher and part-time inventor, beleived she could be the one to fix it. It just so happened that one of the many invention ideas she worked on in her spare time was one that conserved energy by alternating between thermal and electric. High on the idea that she could be the person who saved the city, she took a leave of absense from the school and began working on her project full-time. While the Freedom Five was off fighting robots or whatever, Isabell got her first prototype working and recieved permission from City Hall to test it out. Not one to waste time, she hooked it right up to the main powergrid, switched it on, and was knocked unconscious from the resulting explosion.
There were no faults in her design, but the moment she turned it on happened to be the same exact moment that Akash'flora connected her roots to the power grid and started flooding it with void energy, overloading the machine and having a strange effect on Isabell herself. When the machine blew up, the void energy somehow "transferred" its function onto Isabell's body, giving her the ability to generate heat and electricity at will.
When she came to and realized all this, she was furious. Not because her only prototype of revolutionary technology was destroyed, not because the past several months she spent working with no pay was wasted, but because some "magic tree" had upstaged what should've been her moment! Isabell, however, was an opportunist, and with these new powers she had a new job lined up for her. If she wasn't gonna be famous as an inventor, she could always become famous as Lampyridae (pronounced lam-peer-i-dee), a master of fire and lightning, and antagonist to any and all magic users.