History of Vex Cyclops

Vex Cyclops are heavy Vex units that spawn as reinforcements when the Spire Integration public event turns Heroic. The Heroic variant spawns a Vex Hydra and two Vex Cyclops.

Sources differ on where this happens. The Shattered Vault lists Spire Integration on Europa, Nessus and Neomuna, while Destinypedia lists Cyclops among the Heroic enemies on Io and Nessus only.