#gareaf

Incredibly late response, I am very sorry!!

but Amy & Sonic are basically the kiddos' aunt & uncle. They babysit sometimes... though Tails & Shadow's kids tend to be a handful...

(3 extra kiddos + your own rambunctious kid = a little chaos)

As for your first question...

Pretty much, yeah lol. a little genetic engineering and fantasy world magic. Tails' speciality has always been mechanical, but i think he'd get into more biological stuff when he's older cuz he's a curious and inventive bastard... So, why not grow your own lab kids i guess.

meant to respond to this much earlier haha... Sorry!!

But while not exactly what you suggested here, I have this old "mad doctor tails x monster shadow" au... its mostly a silly excuse to draw big monster shadow LOL

heres the designs and a couple doodles

The idea was that Tails found Shadow on the brink of death and in exchange for saving his life, he has Shadow work for him. Also in the process of "saving" him, he did a bunch of experiments and caused his monster mutation. for funsies.

its kind of Frankenstein's Monster meets Beauty and the Beast LOL I havent really thought too hard abt the story.

anyway i have another much older doodle under the cut, cuz its gore-y... surgery on shadow? looks like an autopsy