The Viggers/Chrauler ADR-04-Mk X Defenderdestroid is an anti-aircraft defense robot system (mecha) created by the U.N. Spacy to fight the Zentradi.
Designed for anti-aircraft operations in mind, the Defender featured two heavy and very potent double barrel automatic cannons for arms. The mecha also has two large ammunition drums (often mistaken for missile pods) mounted on top of its main chassis.