Kimblee was a psycho who thoroughly enjoyed committing acts of violence for what seemed to be his own amusement. After Mustang kills Lust he stops womanizer altogether and is more open to his feelings about Hawkeye. Lust is defeated by Roy Mustang who was on trial for being a womanizer (he states at one point that when he becomes head of command he wants to force all the women officers to wear mini skirts). Now handicapped he can no longer enjoy sexual intercourse. He's punished for trying to sleep with her (unbeknownst to him that she's the enemy) and its hinted that he leaked Mustangs secrets to her in exchange. Lust cripples Jean Havoc from the waste down. He brags about killing women because their weak but first he's defeated by Riza Hawkeye then is completely annihilated by Lust. Lust - She kills the serial killers 48 and Barry the chopper (or at least she carves up Barry the chopper in manner that mimics the way he tortured women). In fact in many ways the Homunculus's fight scenes and assaults seem to borrow ideas from dantes inferno and tend to represent divine judgment. Whenever they interact with a character on the show they seem to be putting said character on a morality trial.

The antagonists the Homunculus represent the 7 deadly sins.

One of my favorite aspects of the series is how it often compares the pursuit of knowledge through science to divinity. Started re watching FMA Brotherhood on netflix.

Fullmetal alchemist brotherhood 7 sins