Μπήκε κι αυτό το ηχομιμητικό στα λεξικά:
mwahahaha /ˈmwɑːhɑːhɑːhɑː/
(also muahahaha, muwahahaha, buahahaha)
exclamation
used to represent laughter, especially manic or cackling laughter such as that uttered by a villainous character in a cartoon or comic strip: World domination, at last, is at...