Doomknocker

The Doomknocker is a blue-armored soldier, first encountered by Link in Parapa Palace in The Adventure of Link. They are similar in appearance to the Iron Knuckle, and attack by throwing maces horizontally towards Link. The best technique to destroy a Doomknocker is to use the Down Thrust technique after dodging their projectiles.

Interestingly, this enemy's Japanese name (ヘルグーマ) translates as "Hell Guma", a name similar to the enemy holding a Ball and Chain in the same game.