Og Wally is the original, Op Wally is the reverse. The two are completely opposite. Og Wally is more friendly and cheerful than Op Wally. Op Wally is more irritable and angry than Wally. Usually Og Wally will hide his anger but Op Wally shows it right in front of you. but both of you like you, only the difference is in expressing it. Og Wally flirts and clings to you. and Op Wally keeps it hidden and doesn't flirt with you like Og but he still blushes at you and shows it off in his own way.