Ibu Ibu was an aquatic Monster that saw action in Ep.67 of the Grendizer Anime and was partner with fellow Vega Beast Ragu Ragu, piloted by Minister Zuril, it was the 73rd Monster by order of appearance. The monster resemble a Sea Snail with a sea shell, albeit it had amphibian legs and a long tongue coming from its mouth. It was Green Blue in color with light color warts over its body, its Shell was purple and had yellow spikes. Ibu could hid inside its shell for protection and transport around like a sub, its only weapons been its spikes which serve as drillers.

Ibu Ibu fought Grendizer twice, but after the latter destroyed the Underwater Base and Ragu Ragu, the Mecha dragged it to the surface with chains and dispose it with Double Harken, its remains exploding underwater. This would be the last Monster Team Up in the series.