The Hunter-Killer Robots are machines built by the Yeerks. They are medium-sized spheres that have a single sensor acting as its eye and a deadly Dracon Beam. If a threat is detected, the Hunter-Killer Robot opens fire until the threat is destroyed. They are weak, however, and mainly built to act as patrol units near Yeerk Pools and provide support.
|Earth/Human Technology||EGS tower | Oatmeal | Battle Morph|
|Andalite technology||Andalite Disc | Dome Ship | Escafil Device | Hirac delest | Mirrorwave call | Z-space transponder | Morphing | Mag-Hover Truck | Quantum Virus | Shredder | Gleet Bio-Filter|
|Yeerk Technology||Anti-morphing ray | Dracon beam | Gleet Bio-Filter | Kandrona | Kandrona Rays | Nova-class Empire Ship | Pool ship | Blade ship | Mag-Lev Train | Hunter-Killer Robot | Yeerk Pool | Bug fighter|
|Ketran Technology||Explorer | Time Matrix | Fire-And-Forget Explosive Homer | Uninet | Adge|
|Other||Dropshaft | Ixcila(Arn) | Pemalite crystal | Skrit Na Saucer | Hawjabran Colony Ship | Hawjabran Freighter|