The Space Cerberus appears in episode 50, when Giroro has to fight it to get its liver as a cure for Natsumi's mysterious illness. It appears similar to Cerberus, but with dragon-like heads and metal armor, giving it a robot look. Little else is known about it but it moves very fast and is extremely dangerous.
In episode 110, due to government control a Space Cerberus liver is 30 times expensive than before.
- Cerberus (mythology) at Wikipedia