Sans

Sans
Sans is an enemy found in the judgement hall which you must attack 30 times to defeat Sans's attack's range from gaster blasters to telekinesis and bones his battle is unique in it inflicts "KR" (karma) which is a poison that kills you overtime so it is recommended to use Kindness soul and good armour to fight sans many consider his boss time wasting due to "Chara" having the same EXP and taking less time so the only real reason to fight sans is if you want perseverance fragments. This article is a stub if you would like to edit it and add more info feel free.