Quadran, occasionally spelled Quardran or Quadaan, is the fighting robot Ender uses when he trips into the world of Red Savarin. He is made out of scrap steel, crystal, Nano-Metal and Ender Shards. It allows Ender to enter Trance Mode whenever he wishes, and behaves similarly to the Dahak (Red's robot).
Quadran has four arms, each equipped with state-of-the-art hydraulic lifting mechanisms, several Trance gauges, jet thrusters in the hands, hacking equipment, lasers, missiles, mirrors, spare parts, spare material, harpoons, enough free space to hold Ender's entire arsenal, and enough firepower to take down an entire Kurvaz battle fleet.
Whenever Ender cannot use the Beyonder suit, he calls upon Quadran as backup.