Zumi

Okay, with just one clown there's clearly not a posse, but will they at least look particularly insane?

with every move, the clown inches closer.

its position stays the same between battles. 

upon reaching a certain level of closeness, it appears in the background of every map.

where it gets closer.

and closer.

then you become the clown. 

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field idea: clown field. it's literally just a normal field with no difference from a normal field  except for there being a clown visible in the far distance

Yeah I agree that Reborn could use a Zumi cameo too