Mawverne

Mawverne is a boss who appears in Mega Man 11 as the boss of the second Gear Fortress level. It is a magenta-colored robot encased in a spiky shell and is a throwback to Circring Q9 from Mega Man 5. Mawverne primarily protects itself by withdrawing inside its armor while shooting red electric spheres and energy bolts. In addition, it can teleport and use the Power Gear to fire larger laser beams in quick succession.

Mawverne's weakness is Bounce Ball, hinted at by the electric bond keeping its shell together. Hitting any part of its shell while its clasped with Bounce Ball will cause it to spring open.

Trivia

 * According to Mega Man 11's Gallery Database, Dr. Wily originally wanted to create a second version of Mawverne equipped with a Speed Gear, but abandoned that idea after realizing how long it took to create the special armor that makes up Mawverne's shell.
 * "Mawvern" may be a portmanteau of "maw", in reference to its prominent mouth, and "mauvern", the color seen on its head.