<Tr> <Th> Relatives </Th> <Td> Yvonne Burns (aunt) Paul Burns (uncle, deceased) Cindi Burns (first cousin) Anthony Ford (first cousin once removed) </Td> </Tr> <Tr> <Th> Seasons </Th> <Td> 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 </Td> </Tr> <P> Derek Morgan is a fictional character on the CBS crime drama Criminal Minds, portrayed by Emmy Award winner Shemar Moore . Morgan specializes in fixations and obsessive behaviors . He is a Supervisory Special Agent of the FBI's Behavioral Analysis Unit, (although has served as interim unit chief for Aaron Hotchner), and has appeared from the series' pilot episode "Extreme Aggressor", which was originally broadcast on September 22, 2005 . Before he left in season 11, he was one of only three main characters to appear since the first season as "starring", while also becoming the only character to appear in all episodes . </P> <P> Morgan is shown over the series being flirtatious towards the team's technical analyst Penelope Garcia (Kirsten Vangsness). However, the relationship is platonic . He is shown to be confident and assertive, along with being very protective towards Spencer Reid (Matthew Gray Gubler), whom he helps to pick up girls . He is the muscle of the team, and usually storms in when a suspect requires apprehending physically . </P>

What season of criminal minds does derek leave