Ape Stone

Ape Stone (エイプストン) is a ape head-shaped stone from Mega Man X7 that appears in Soldier Stonekong's stage and the Crimson Palace. Most are harmless and only stand in the path, some moving up and down. A few Ape Stones can attack by spitting rocks from their mouth, and can only be harmed when the mouth is open.

In the end of Soldier Stonekong's stage, the player must face eight rapidly spinning Ape Stones before fighting against the boss. 

Cyber Stone
Cyber Stone (サイバストン) is a digital variety of the Ape Stone that appears in Snipe Anteator's stage. 

Ape Sting
Ape Sting (エイプスティング) is a variety of the Ape Stone that appears in the Crimson Palace. It has two spikes on its back.