I'd much rather see GJ and Goku be a pair of detectives being hunted down by assassins in the form of Yiffgurl and Goblin.
You could also throw the whole Turd hating Qwertyo thing in there and make both characters the lords of their own respective kingdoms, with Turd being the vengeful, evil king, and qwertyo the concerned king who doesn't know what to do about him. GJ and Goku could be subjects under Qwertyo, and Yiffgurl and Goblin could literally not give a shit about Turd despite his hiring of them and there'd be hijinks between them or something.
Idk brainstorming
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