Suggested by Destroyer I don’t find Sailor Mercury to be the most impressive fighter among the Sailor Scouts but it is certainly true that she is strong enough to take the Blob down. He may be powerful but he doesn’t have any speed alongside that and so he would quickly be crushed here. Mercury can just keep on firing her water blasts until his durability fades. It’s why not having speed is a huge detriment in a fight because then you just have to stand there and take the blows. Sailor Mercury wins.