Well 1) the first and last questions were rhetorical and 2) you just answered them for me anyway so BOOYA.

I pretend that the kid is a Space Anomaly Eggbaby between Ari/Deon/Mara. Somehow????

There were at least a dozen episodes in the franchise with this exact plotline (emphasis on the somehow) so yes, this seems very likely to me.

ACTUALLY. YOU KNOW WHAT. This story kind of makes me want to see Ari and Deon in some kind of Melanie babysitting adventure, but I'm pretty sure the Doc is smarter than that, so.