Tholian
- Appearance: Silicon-based, crystalline
- Faceted form, six arachnid-like legs
- Body filled with swirling gasses
- Different individuals have differing hues of outer body shell (SCE Short Story: "Interphase Book 1")
- Used for individual identification in addition to body features (SCE Short Story: "Interphase Book 1"; VAN Novel: Harbinger)
- By Interphase Book 1, hue indicates caste, but this seems to be contradicted by later portrayals of Tholians in novels
- Nobility indicated by reddish hue by that work
- By Interphase Book 1, hue indicates caste, but this seems to be contradicted by later portrayals of Tholians in novels
- Used for individual identification in addition to body features (SCE Short Story: "Interphase Book 1"; VAN Novel: Harbinger)
- Homeworld: Tholia
- Biological notes
- Tholian minds interconnected in an interstellar subspace telepathic network known as the Lattice (VAN Novel: Harbinger)
- Further subdivided into SubLinks organized by caste according to individual duties, social subgroupings (VAN Novel: Harbinger)
- Tholian minds interconnected in an interstellar subspace telepathic network known as the Lattice (VAN Novel: Harbinger)
- Cultural notes
- Tholian language
- Described as "the screech of a tritanium blade on glass" (SCE Short Story: "Interphase Book 1")
- Tholian calendar
- Time measured in "cycles" (SCE Short Story: "Interphase Book 1")
- Tholian language
- Foods and drinks