Robeasts are monstrous creatures that feature in Voltron.
On Planet Doom, the inhabitants were known to gather slaves from their travels and place them in the arena where they were massacred against normal sized Robeasts. On Planet Arus, Commander Yurak attempted to capture the Galaxy Scouts who had managed to acquire and pilot four of the lions that made Voltron. The forces of Planet Doom were devastated by the lions leading to Haggar dispatching a Robeast that Yurak activated through his ship.
Once Prince Lotor was freed from captivity, he led a revolt against Zarkon and deposed his father from the throne of Planet Doom with the backing of the Drule Empire. To secure his position, he decided to have Haggar construct the most powerful Robeast possible with this one being piloted by his father who he decided to dispatch him against the Voltron Force.
Certain Robeasts were not giant monsters but rather advanced mecha that had a pilot that operated them.
- In the original anime Beast King GoLion, they were referred to as Beast Fighters.