Megan Dietrich is the main antagonist in the comic book series 100 Bullets.
First appeared in issue #4. The series' femme fatale; a charming, confident yet deadly member of the Trust. Megan had risen to become the head of the Los Angeles-based Dietrich family, also running the family securities firm following the death of her father. A seemingly staunch supporter of the House of Medici and a close friend of Augustus, Megan had a hidden agenda and was not above murder to protect her own interests, also displaying more than a passing interest in Benito Medici. Megan was shot in an intentionally unsuccessful assassination attempt by Victor in San Diego (in issue #66). Soon after, she consummated a deeper partnership with Augustus Medici, who was able to convince Megan to not seek retribution for the attempt on her life. Megan's relationship with Augustus appeared to be headed towards a possible marriage, but the relationship was terminated by Augustus. Megan then teamed up with Vermeer and D'Arcy as they plotted a plan against Medici and Graves that would realign the Trust under her leadership. In issue #99, she was seen seducing Benito (the brand new head of the house of Medici) in the pool where he would be found dead in the next issue. She was shown to be possibly both racist and sexist in issue #100, when she reacted to Graves' naming of Dizzy Cordova as the new Agent of the Minutemen. Megan was killed in an explosion engineered by Cole Burns (which also ultimately claimed his life as well) in issue #100.