"Super Defense Robot", known as "Super Defense Robo" (ＳＤ（スーパーヂフェンス）ロボ Sūpā Difensu Robo) in the OCG, is an archetype of EARTH Machine-Type monsters used by Orbital 7 in the Yu-Gi-Oh! ZEXAL anime. The goal of this archetype is to quickly Xyz Summon Rank 8 Xyz Monsters, particularly their ace "Googly-Eyes Drum Dragon". In the anime, they have a support card "Robocircus" that can aid in swarming, though in the OCG/TCG, the monsters have a similar swarming effect instead. In addition, the cards can work together with the card version of "Orbital 7".