Donquixote D Lynn Aka, alias: Mizu D Lynn Aka. Sometimes refered to as Trafalgar D Lynn Aka.

While Aka is depicted as rather stoic and serious and actually has a resting bitch face.... Hold on to your butts for this one.

Aka is actually a Jiriya from Naruto level perv.

I never really call much attention to it in any stories, but Aka is very perverted, especially when it comes to Law.

Though I never mention it in writing, whenever Law actually lets the crew relax in a bath house, she actually will disguise herself as a boy and hide in the men's bath house just to peep on Law. How she can disused her self as a male? Well, that's just to get in to the men's bath house.

Aka, being 5'2" and having a high tolerance for heat, will go to the deepest parts of the bath house where she knows Law will go and peep on him there.

And yes. She was once caught by Law. However, given Aka's stoic nature, she didn't really panic. The interaction went somewhat like this:

Law: Aka-ya, what the fuck do you think you are doing?

Aka: um... What does it look like, Captain? Stairing at your ass, obviously.

Law: Aka-ya, go back to the women's side.

Aka: why would I do that? All I can stare at over there is female ass.

Law: and?

Aka: trust me, Captain, no girl's ass is as fine as your's.

And Aka ended up scrubbing the floors of the submarine for two months.

Also, again, given Aka's relaxed and stoic nature, she's not bothered by others peeping on her. In fact, when first meeting Brook, when he asked to see her panties, while Nami, Ki and Aisuru yelled at Brook, Aka just went "yeah, sure, okay" and dropped her jeans.

And that is the story of how Sanji died.