Blite Captains are Grineer Galleon captains marked for assassination in Empyrean missions.
The Blite Captain can deploy Carabus drones which fire swarms of Toxin Damage Toxin missiles which, unlike The Grustrag Three's Carabus, will persist even after the captain is dead.
Grineer Galleons in Empyrean missions will always have either a Blite Captain or a Pyr Captain on board. This is the only place where these units can spawn.
Update 28.0 (2020-06-11)
Update 27.1 (2020-02-04)
Update 27.0 (2019-12-13)