Greenman vs. Danketto (グリーンマン対ダンケット, Gurīnman tai Danketto?) is the twenty-fifth episode of Go! Greenman.
The episode starts with Maoh angrily requesting for Tonchiki's appearance. Obeying his master's wishes, Tonchiki teleports to Maoh's side. There, Maoh orders the subordinate to release a monster, to which loyally complies. In a large sand-covered area, a group of small boys are seen playing a war-type game with most of them carrying toy guns and charging forth as a battalion. Once far enough into their "battlefield", the presumed leader throws a toy grenade far in front of him. Much to his surprise, the grenade explodes on contact with the ground, and reveals Tonchiki's newest monster Danketto. The insect-like kaijin pursues the fleeing children who eventually fall, due to the front-most boy tripping. However, one of the kids manages to dart away and activates a Green Call. Answering the device's signal, Greenman joins the fray and begins beating down Danketto. They continuously engage one another in short spurts of hand-to-hand combat until Danketto catches the hero off-guard using a tongue-shaped bomb. Although not hitting Greenman directly, the force of the explosion knocks him to the ground, and temporarily stuns him. Taking the opportunity, Danketto proceeds attacking Greenman, even throwing the remainder of his bombs. The monster soon realizes that his bomb supply has been completely diminished, and continues fighting. Unexpectedly, another bomb appears in Danketto's mouth and he quickly tries throwing it. But, Greenman grows to a giant size before Danketto can even grab the explosive. Danketto also grows to continue combating Greenman who quickly succumbs to the monster's strength. However, Greenman soon manages to regain the upper hand and destroys Danketto with the Breaster attack.