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This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.

Sylvia Tilly was a female Human Starfleet cadet who lived during the mid-23rd century. She served aboard the USS Discovery in 2256.

She rated herself as the best theoretical engineer at Starfleet Academy, and was fast-tracked in order to serve aboard the Discovery. She initially had quarters of her own due to her "special needs", since she was allergic to polyester and viscoelastic polyurethane foam, which caused her to snore. She then started sharing quarters with Michael Burnham.

During her time aboard the Discovery, she served in engineering. She also was part of the boarding party sent to investigate the USS Glenn. (DIS: "Context Is for Kings")

Although often socially awkward, Tilly came out of her shell in certain settings, such as the party held on Discovery; even showing aptitude in 20th century beer pong. During the event, Tilly rebuked romantic advances from Lieutenant Rhys. (DIS: "Magic to Make the Sanest Man Go Mad") Paradoxically, Tilly also became a social mentor of sorts to Michael Burnham and facilitated her introduction to future romantic interest, Ash Tyler. (DIS: "Lethe")

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Background informationEdit

According to, Sylvia Tilly was born with laryngotracheal stenosis. This condition was described as "an abnormal narrowing of the central air passageways that can cause chronic snoring and a dry throat."

The character was named after the young niece of Gretchen J. Berg. (After Trek: "Episode 2")

External linkEdit

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