Jason GideonJason Gideon was a criminal profiler, formerly the Senior Supervisory Special Agent of the FBI's Behavioral Analysis Unit. At the beginning of Season Three, Gideon abruptly quits from the BAU for good due to emotional issues, and his position is now held by David Rossi, who has held it to this day. InSeason Ten, he was murdered by Donnie Mallick.
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Aaron HotchnerAaron "Hotch" Hotchner is the unit chief of Quantico's Behavioral Analysis Unit and the direct superior of all special agents.
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David HossiDavid Stephen Rossi is a Supervisory Special Agent and Unit Senior Agent at the Behavioral Analysis Unit at Quantico, Virginia. He is partially based upon real life former profiler John Douglas, like his previous counterpart Jason Gideon.
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Jennifer "JJ" JareauJennifer "JJ" Jareau is a special agent who was the BAU's former liaison with police and media officials. Upon her return in Season Seven, she officially becomes a profiler while her original position has gone to Aaron Hotchner and Penelope Garcia.
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Elle GreenawayElle Greenaway is a former Supervisory Special Agent with the BAU. Her specialty was sexual offense crimes.
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Emily PrentissEmily Prentiss was a former Supervisory Special Agent with the BAU who joined the team two episodes after Elle Greenaway resigned from the FBI for good. At the end of Season Seven, she resigned from the BAU and later accepted a position with Interpol in London.
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Derek MorganDerek Morgan is a Supervisory Special Agent with the FBI's Behavioral Analysis Unit. For a time, he was the acting unit chief of the BAU, taking over as Hotch stepped down temporally. He specializes in explosives, fixations, and obsessive behaviors.
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Penelope GarciaPenelope Garcia is the BAU's Technical Analyst and also the team's Media Liaison Officer since Jennifer Jareau's promotion to Supervisory Special Agent; the latter is a job that she shares with Aaron Hotchner.
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Spencer ReidDr. Spencer Reid is a Supervisory Special Agent with the BAU. He is hailed as a genius and an autodidact.
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