Meredith Gordon, portrayed by Jessalyn Gilsig, is the biological mother of Claire Bennet and the older sister of Flint Gordon. She does her best to watch over him, leading their abusive father to tell Flint, "God gave you an older sister instead of a brain." Like her younger brother, Meredith has pyrokinetic abilities, which both enable her to create fire from her body and grant her immunity to the effects of it. The two were separated after she accidentally burned down her father's house with their father inside it, though after years of effort Meredith tracked down and reunited with him. She eventually began a relationship with Nathan Petrelli, and the two conceived a baby, Claire. Meredith was later attacked by Company Agents Noah Bennet and Claude Rains, and her powers created a large explosion that consumed the building. The Company was led to believe that Meredith perished, while Meredith herself believed Claire had died. Years later, Meredith was captured by Thompson while robbing a convenience store with Flint. Rather than be a prisoner for the rest of her life, she agreed to train to become an agent. However, after she learned that Flint was also captured and was to become an agent, she felt that the Company was just using the two of them, and broke Flint out. The siblings were separated after Thompson tracked them down, and she was recaptured. However, Thompson lets her go after learning that Claire was her daughter.Claire manages to track her down after many years, though the two only meet briefly before separating. Meredith blackmails Claire's biological father, Nathan Petrelli, for $100,000 before leaving, and hides his identity from Claire. She later returns at the request of Noah to help protect Claire from the escaped Level Five villains. She helps Claire to admit that, contrary to her claims that she wants to be trained so that she can help people, she actually wants to learn how to fight so that she can get revenge on Sylar. Meredith later confronts Eric Doyle, with whom she has past connections, believing Claire may have gone there. However, she is rescued by Claire and Sandra Bennet, and later accepts Noah's request to rejoin the Company as his partner. When Sylar later takes over Primatech and holds Meredith, Claire, Noah, and Angela hostage, he injects Meredith with high adrenaline, eliminating her control over her pyrokinetic abilities. She and Noah are then placed in a Level 5 cell, where her lack of control threatens to burn Noah alive. Claire manages to break them free and tries to save Meredith, but Noah pulls her away. They make their escape as Meredith loses total control, destroying the Primatech facility.
In the graphic novel "The Natural Order Of Things", Mohinder remembers Sylar´s victims as he watches the funeral pyre; Meredith is counted among those deaths.