Tatebo

Tatebo (ターテーボ) is a cannon enemy in Mega Man 6 that appears in Centaur Man's stage, Knight Man's stage, and in the first stage from Mr. X's Castle. Tatebo is an improved version of Tatepakkan that shoots at an arc and, once its shield is moved up, shoots straight. It can only be hit when the shield is not in front of it.