Warlock

A warlock is a practitioner who has, either purposefully or accidentally, broken at least one of the seven laws of magic.

Description
Warlock is a catch all term, including necromancers, psychomancers, people who have killed mortals with magic, or practiced black magic. Barring extenuating circumstances, a warlock found out by Wardens, is summarily executed, or killed in the attempt of escaping apprehension.

Proven Guilty
In Proven Guilty, Molly Carpenter was tried by the Senior Council after she mind-controlled her friends to protect their baby from their drug addictions. She was nearly executed by Merlin and Morgan until her father, Michael Carpenter arrived with the missing Senior Council members, having just contacted them. She ends up being put under the Doom of Damocles, under the mentorship of Harry Dresden.

Ghost Story
In Ghost Story, Molly Carpenter is now considered a warlock under the Doom of Damocles after Harry Dresden vanished and was presumed dead.

Skin Game
In Skin Game, Harry Dresden thinks that most of them are misguided kids unaware of the Seven Laws of Magic and ignorant of the White Council's existance.

Warlock Hannah Ascher joins Nicodemus Archleone's team attempting to rob Hades' Vault.

"Zoo Day"
In "Zoo Day", Austin is a teenage warlock, scared out of his wits and left on his own devices, which Harry Dresden decides to take under his wings.