CHOSE: papyrus:easy 50 hp doesn't dodge sans:normal 1 hp but dodges saness:IMPOSSIBRU 1000 hp and also dodges swagman:SUBAR IMPOSSIBRU 10000 hp and dodges (if swagman battles swagman there's: the boss swagman becomes weaker and regular swagman gets first hit, if he spares, he gets a chance of getting 9000 power, 9 more buds, (adds to 10 buds) or has to fight) underswap sans and papyrus are the same as papyrus and sans request for more bosses if you like. they can be scratchers or anything else like a toaster.
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