When I made Louie's Quest Louie, I tried to hit a balance where he's a lot more blunt and straightforward compared to Olimar, but still has a personality and some actual depth. I think that's the best Louie myself, Poochys art for these is what really elevates it, though.
ALT Also Louie never calls enemies by their proper name, because of course he wouldnt know what Olimar is calling them, and he doesnt bother coming up with good names himself
Along with basically only ever talking about food, Louie also talks like a 5 year old nowadays, despite having a good vocabulary before
His notes that were borrowed from 2 (left) and his new notes made for 4 (right) feel like they were written by entirely different characters