You can absolutely have a ferocious, scary fash villain. Fascists don't need to literally be Mr. Bean to be a clown. Have them obsessed with something that would otherwise be benign. Have them feel some lack from a failed purity test (i.e. being It*lian and feeling like you're not white) rot their soul from the inside and torture them. Maybe a powerful mage in an all black military uniform who's self-conscious about going bald. A skinhead with a legendary weapon who shaves their teeth until they're all sharp and gets an infection of the mouth. A powerful tycoon whose project is a natural order that is obviously based on fictitious pretenses who has fooled an entire army who refuse to get out of Plato's cave. An elusive, beloved bard who conditions victims to believe that society is full of drones and his victims can do nothing but repeat what the bard has said uncritically. You can give a villain a fatal flaw allegorical to being fash that both makes them look like a clown and doesn't preclude them from being aesthetic.