|Notable individuals:||Doc Dantalion|
|First mentioned in:||The Brain of Morbius|
Birastrops were a race of short insectoid beings. They had six spindly arms and a chitinous carapace which they could shed at will. Birastrop morality allowed killing for medical research. (PROSE: Where the Heart Is)
- The Doctor met the same Birastrop on two occasions one thousand years apart, perhaps indicating that they had very long lifespans.