Geki

Geki (ゲキ) assists the Autobot Swordbot Gekisoumaru in his quest to vanquish the Predacons threatening Japan.

Go!

 * Geki (Promotional Arms Micron, 2013-11-16)
 * A redeco of Ozu, Geki transforms from a robotic mammoth into a grenade launcher. As part of the Arms Micron gimmick, Geki features numerous 5mm peg-holes and pegs, allowing him to combine with other Microns to form bigger and more ridiculous "Combo Weapons" and "Super Combo Weapons". He is specifically meant to combine, however, with Sen, Ex, Shou, and Go to form the Gojōgōdenjin great sword, the Gojōgekidohō cannon, the Gojōharyūtsui hammer, and the Yonjōnagamitsu nagamitsu. Geki comes out of the package as a bunch of unpainted parts on runners, like a model kit. Unlike the Arms Microns from the Japanese  Prime toyline, he has a tampographed Autobot symbol on his Energon crystal, rather than a sticker beneath it.
 * Geki was only available with the purchase of more than 3000 yen worth of Transformers: Go! toys at most Joshin Kidsland and Bic Camera stores starting on November 16th.