Batton Bone

Bat Bone (バットンボーン) is, simply put, the Bubble Bat of the Mega Man X series, and it pretty much acts like its classic predecessor, except it can be shot even while it's hanging upside down (the old Batton is invincible while hanging upside down).

In Mega Man X2, X encounters Bat Bone Type G (or Batton Bone G). But they're still the same Bat Bones.

In Mega Man X4 and Mega Man X6, they are called Batton Bone B81.

In Mega Man X5, Batton Bone B82 appears in Dark Dizzy's stage.

Similar enemies
Enemies similar to the Bat Bones.
 * Bubble Bat
 * Turban