These are the most common of SeaPlaNn's battle droids, it is capable of a good speed of flight as well as underwater due to the Marlin jets where you and I would consider our hands to be. Although not particularily fast they a are noteable for their manueverability and tough build.

The water rich worlds they hail from suffer for lack of landbased produce.  This can lead to unprovoked attacks as what appeas to be relatively worthless to us may well be worth your life to them, hence the denizens of water species' worlds emit more pirates on average then most other world type (that is, not suffering anarchy, wars or disasters).

 

A battle tug, can pull most crashed vessels up to medium, and clear paths with its tractorbeam cannons.

A navigation droid, this one in particular is named Tacker for the sounds its feet make in the corridors of the University who own it. Tacker makes its own paper and ancient style maps, wandering at night to the arts department when all is quiet.

GalCop Persuit android. These are specifically designed for persuit and arrest in both gravity and weightlessness, hence the very humanoid body for negotiating all areas of stations and vessels accessable to humanoid races. There are only a few who are not and evolved from a different linneage. It is armed with various kinds of submission gun, varying from sound, mercury pellets and electricity according to the species resisting arrest or being chased. All weapons are medium term stun, usually lasting around two hours.

The idea behind this emergency incident droid was for it to be able to stand tall on its back wheels, but also string itself out to squeeze limb by limb through small gaps.

The droid is launched in a barrel like pod that it climbs out of upon arrival, it will head straight into the disaster zone, being able to withstand temperatures three times higher than the limit for known animal/intelligent life, even its wheels, being a reactive gripping alloy.

Its main armamenr is an extremeley powerful hoover/filter (front middle) for when the species being rescued is in the wrong (and therefore unbreathable) enivironment. This is counteracted with a gas sniper (top rear) to aim directly at victims with high concentration breathables, laced with anisthetic and relaxants.