Enker

Enker was the first Megaman Killer build by Dr. Wily. In Mega Man: Dr. Wily's Revenge, he appears after the second set of Robot Masters is defeated. His Mirror Buster allows him to absorb shots and send them back. To beat him, just shoot once, dodge, and repeat. Enker appears again in Mega Man V, among other games, but his modus operandi has not changed much.

Mega Man and Bass CD Data
First model of the Megaman Killer robots. With the Mirror Buster, he can reflect enemy attacks. "Be true to yourself!" Good point: Soulful Bad point: Gloomy-natured Like: Nabeyaki-Udon Dislike: Foreign robots 

Trivia

 * "Enker" is probably a play on the word "encore" or the word "enka" which is a type of Japanese folk music.