Tada! Now that Dr. Nefarious/Elaris fankid has a name and a design!
In my headcanons, hybrids don't really exist in the RaC universe so much as you can go into a kid growing lab and choose what parent species you want your child in and the other parent gets some of their physical traits mixed in there to create someone that is 100% one species but has some facial features of the other parent. A good 30% of the RaC population are grown in these kid labs and no one sees it as that big of a deal. It’s just another giant industry like the wedding industry or the funeral industry in their world.
Although in Wesley's case, one of those tubes got stolen in the middle of the night and his father’s physical traits come from a bunch of eviscerated meat that's been saved in a Tupperware container for the past two decades.
Anyways, Wesley! Since both of their parents were relentlessly bullied in their youth, he was homeschooled and, as a result, is kind of clueless with social interactions. They grew up pretty well-adjusted but they’re also slightly edgy, hates and distrusts “the government” for how his parents but especially his mom were treated, and knows how to turn any fast food self-service kiosk into a Doom ROM if given like twenty seconds. He’s also a notorious video game leaker and has made several beloved emulators in his world.
He’s less “supervillain” and more “midseason anime rival that later befriends the hero after they lose a few times”.