They make a good couple. Both are fairly mental but have lucid moments. They look like themselves quite nicely.

They're actually my favorite pairing from the show. Their homicidal tendencies, Megavolt's lack of memory i am pretty sure is a medical condition he needs help for, and the fact Quackerjack manipulates his memory to his advantage is concerning. They are problematic.... But they also make each other happy and give them a companion that isn't a voice inside their head-- so I approve.

Plus, cartoon relationships can get away with more violence when they can just easily heal/regenerate themselves.

Megavolt gives Quackerjack a handy storage space for Mr. Bananaface(or whatever the name was) when he's not being used :) "Hey, Megs, lift your tail, I need to talk to my banana." "Again? You just ERG... did an hour ago." "Not THAT Banana!"

Steven: “Quackervolt! You're a fusion?!”