>>527627835
I beat Jevil and Spamton NEO (both of his fights) first try, but I lost to Gerson once. Despite this, I think Gerson is the easiest, and I only lost to him because I never used Susie's heal, since I figured that it wouldn't progress the fight and that you HAD to attack him like with Sans. The Knight took me around seven attempts, and I don't remember how many times I died to the Mantle boss, but I know I spent longer on it than the Knight.