She's grateful when Haruka wins her a goldfish at a festival, and she loves aquariums and spending her free time watching fish.
She's witty enough to fluster the normally suave Haruka, and intelligent enough to manipulate Seiya into letting his guard down by charming him. In the manga, Usagi, Ami, Rei, and Makoto frustrate Minako (the original ace) by gushing about how awesome Haruka and Michiru are. She's wealthy enough to own a Stradivarius and attend an elite academy, has great artistic talent in many areas, athletic in civilian and guardian form, and is leagues more powerful than the inner soldiers.