unpopular opinion but i really dont think that sampo and itto are super similar? i get they have some similarities but sampo is more intelligent and definitely has more con-man trickster type tendencies, and while itto can be a joking person i dont think he has as much malicious intent as sampo, like i genuinely dont see itto scamming someone or manipulating someone 😭 and im not saying that sampo is totally evil either, he does have his good sides and hes more morally grey than anything, but i feel like sampo is more tricky and sly comedic relief while itto is more of the type of comedic relief where he himself is the joke if that makes sense? to put it as simply as possible:

itto has more dumb but endearing himbo energy and is more happy-go-lucky, and is more of the comedic relief in the sense that ur laughing at him and just how overall goofy he is

sampo is more intelligent and a trickster type comic relief cuz he is just kinda morally grey but heroically aligned and u never expect what hes going to do next

theyre both just silly little sillies <3