Mark J. Hadley ("AgentParsec") is an electronic music composer prefering to work with videogame-style soundtracks, and an amateur game designer (though not a game programmer). He got involved with Homestuck after randomly deciding to submit a piece of fanmusic for Problem Sleuth. (NOTE: this wasn't the first fanmusic he had submitted to an animated comic.) His dream is to one day work on a professional game project in both music and game design.

His work is on Homestuck Vol. 1, Homestuck Vol. 2, Homestuck Vol. 3, Homestuck Vol. 4, Midnight Crew: Drawing Dead and Homestuck Vol. 5. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.