|Relationships:||Genevieve Mirren-Carter (girlfriend), Nikolaj Boyle (son), Jake Peralta (best friend)|
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Charles is a hard working and enthusiastic detective, but he is nervous and often clumsy. He is very dramatic at times and is a huge foodie. He is best friends with Jake Peralta and gets jealous when Jake makes new friends.
Charles is occasionally shipped with Gina Linetti, with whom he once had a brief fling.