Stella's husband and Blanche's brother-in-law. A working-class, aggressive, and dominant man who clashes with Blanche over her past and perceived pretensions. His investigation into her history and subsequent actions directly trigger her psychological collapse.
Eunice observes Stanley's aggressive behavior and household dynamics from her upstairs residence.
Steve shares a social and recreational connection with Stanley within their neighborhood.
The Doctor and Stanley coordinate during the final resolution, with Stanley providing emotional support while the Doctor handles clinical care.
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