These characters represented their planets in design and features, such as Mercury and Pluto are very small, while Jupiter is a larger toy.
A few of the Planet Heroes toys were released in a basic model that comes with a smaller accessory.
These include the Earth Ace with Skateboard instead of Go Kart and the Mars Digger with Drill and shield instead of Rumble Rover.
Metallic squad characters for Sun Commander, Mars Digger, and Jupiter Gustus have not been released.
The most difficult toys to find are Voice Comm Sun Commander and Pluto Shiver.