Rosa Diaz is a stern, emotionless and rebellious, and scary bisexual woman who has long, curly dark brown hair and brown eyes. She is actually incredibly strong. 
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Co-workers -
Jake Peralta (man child) 
Amy Santiago (over organizer) 
Gina Linetti (phone addict) 
Charles Boyle (dude with a crush on Rosa/who is weird to her) 
Terry Jeffords (Buff Lieutenant - wife: Sharon Jeffords) 
(Etc) 
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Boss -
Captain Holt/Ray Holt (GAY!!!!) 