The guppy is a 3x3 module used by ships to get energy. The guppy has two parts- the pad and the guppy. The pad stays on the ship, while the guppy ferries energy from the nearest energy mine to the pad. While invincible and very fast, the guppy has a limited storage capacity, reducing it's effectiveness over long distances and in energy-intensive situations.
Four stock ships use guppies.