I know it sounds silly at the first thought, but hear me out, because I think this would be a fun little addition.
The Zombie Clown would be a near average based strength Zombie, however it is constantly juggling various items, like throwing axes or torches.
Its arms would be very long, so it could reach two tiles for a melee attack. Ideally it would be given more than two arms, to both help juggle and melee attacks.
It would have large clown shoes that squeak whenever it walks, so it would lure the zombies towards it to gather around like a horde.
If struck, it also lets off a loud squeak/honk, much like if you punched it on its squeaky nose.
It would be a rare monster, not something you’ll see very often but on a quite rare occasion, like one per city or two kind of rare.
Periodically, if you are in range of the Clown, it will randomly throw one of the items it has at you, whether that be a throwing axe or a pebble. Maybe it throws a torch and catches the house on fire you’re hiding in.
But the best part would be, if you try throwing something at the clown and it enters the two tile radius around it, no matter what, it will always catch it and instantly throw it back. So if you tried to throw a grenade in to the horde that was lured to it by the squeaking shoes, it would throw the grenade right back at you.
I felt like the game needed a bane for throwing weapon users, much like other zombies are deterrents for other fighting styles, and this was what I came up with. I know it sounds silly, but I also think it would be a good fun addition. It could even be given evolved forms, with multiple arms and a more sinister appearance.