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- "Ralph": Portrayed by Tara Wilson; minor character with appearance alluded to during season 1 and 3.
- "Ralph" is a famous tennis player, whose real identity is kept secret by Dana because of her celebrity status. Mentioned during the Pilot episode.
- "Ralph" was Dana's first lesbian experience when she was 17. It is first mentioned during the Pilot episode. "Ralph" appears during a flashback of Dana's coming out story in episode 1.12:Looking Back.
- Uta Refson: Bisexual, portrayed by Erica Cerra; minor character with appearance during season 3.
- Dated Alice Pieszecki during episodes 3.05:Lifeline through 3.07:Lone star.
- Melissa Rivers: Bisexual, portrayed by Melissa Rivers herself; minor character with appearance during season 2.
- Starts a relationship with Tonya in episode 2.07:Lágrimas de oro.
- Robin: Lesbian, portrayed by Anne Ramsay. Dated Jenny from episode 1.12: Looking Back to 2.03: Loneliest Number. Also dated Marina Ferrer briefly.
- Catherine Rothberg: Lesbian, portrayed by Sandrine Holt; minor character appearing in season 4.
- Is a professional gambler.
- Enslaves Helena Peabody under the guise of a relationship in season 4, as a means of getting money back that Helena owes her.
- Convinces Helena Peabody to bet $100,000 on a horse race, which she ends up losing and, consequently, is unable to fund Alice Pieszecki's "Our Chart" website.
Read more about this topic: List Of The L Word Characters