Tensou Combination Gosei Ground (天装合体ゴセイグランド Tensō Gattai Gosei Gurando) is the combination of the Groundion and the Knight Brothers. Gosei Ground's attacks include the Sealeon Kick (シーレオンキック Shīreon Kikku) and the Eraser Missiles (イレイザーミサイル Ireizā Misairu) fired from the six ports on its arms. He can also launch the Knight Brother Headers as guided projectile weapons similar to Gosei Great's Header Attack. Gosei Ground's final attack is the GrounDrastic (グランドラスティック Gurandorasutikku), firing a barrage of Eraser Missiles that hit the opponent before Gosei Ground himself rips through for the final blow.