Monkey was one of the cooler spinoff characters from Dexter's Laboratory (to a lesser extent all the superheroes were pretty great). Kind of weird his girlfriend was human (and not even disputably his girlfriend).
I'm not sure myself, like a number of episodes stand out in my memory- Dexter needing to go to the store to buy a single lightbulb, the family being at the truck stop where his dad ends up arm wrestling one of the truckers and Dexter builds him a power fist, the one where Dexter keeps making action figures with various powers in his lab for the older boys to try and be friends with them... But out of all the ones that stuck in my mind can't decide which is 'best'.
I also recall the one where Deedee is sent back in time to stop Dexter from unleashing an eldritch abomination that eats reality, so now there are two Deedees to bug Dexter, and he still creates the portal to said abomination, so he has to send Deedees back in time to stop him, and now there are three Deedees bugging dexter. And the one where they mutate into monsters and have a kaiju fight. That one was slightly creepy.
Did Dexters Lab ever get videogames? Not counting those old old OLD internet games they used to have on the cartoon network website, where all the character were hanging out on some resort island. Those days, it was like a different era...