Fireball XL5 was part of the fleet of interplanetary rockets protecting Sector 25 of the Solar System from alien invasion under the supervision of the World Space Patrol. In command of XL5 was Steve Zodiac, and his crew consisted of Venus, a doctor, Professor Matic, the science officer, and Robert the Robot, the rocket's mechanical co-pilot.
plays Commander Zero
plays Col. Steve Zodiac
plays Prof. Matt Matic / Zoonie / Lt. 90
plays Robert the Robot