Oren Watson is Joan Watson's brother.
|Oren visits Joan Watson and has dinner with their family and Joan's friend Sherlock Holmes. He brought his girlfriend Gabrielle Harper with him and Sherlock suspects they'll soon get engaged. ("The Leviathan") He is heard on the phone talking to Joan, telling her that he had got a call from a doctor, and that their mother was in the hospital due to a fall. He was actually called by Moriarty who needed to get Joan away from Sherlock to have a conversation with her. ("Heroine")
|Joan's mother, Mary, visits Oren and his wife Gabrielle, she comes to believe that Oren is having an affair when she thinks she sees him kissing a blonde woman. She pushes Joan to discuss the matter with her brother. On the phone, Oren vehemently denies any wrong doing, which leads Joan to question her mother's neurological health. ("T-Bone and the Iceman")
|Jin May Wen||Yun||Mary Watson||Henry Watson|
|Lin Wen||Joan Watson|
- Oren and Joan played video games as kids including Emery Vision's "Swords of Saturn." ("The Games Underfoot")
- Joan mentions that she knows all of the Superlative Comic heroes including the Midnight Ranger from Oren as he was "a geek". ("You've Got Me, Who's Got You?")
- The name "Oren" is an inadvertent homage to Lucy Liu's character in Kill Bill, named O-Ren Ishii.
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