Kaiju (in Japanese, literally “strange creature”) is a zoological term referring to exceptionally massive creatures. On Earth, most large dinosaurs, some species of shark, and giant squids fit this category. Whales would also fit, but they were considered somewhat sapient. On extraterrestrial worlds, kaiju referred to any wild species over three meters upright, four meters long for quadropeds and similar limb arrangements, and five meters for non-sapient aquatic creatures.

JT Austin encountered an unspecified species of kaiju during a supply run to a planetary survey for the IE. The encounter resulted in catastrophic damage to the experimental ship Riverside

Appearances: Winter Games