Armight

Armights (, Sir Alamos) are enemies in the Subspace Emissary and first appear in The Battlefield Fortress level. They appear to be floating ammonites donning golden Trojan helmets with two yellow facial appendages that resemble a handlebar mustache. They clutch javelin-swords with two of their appendages, which they swing while attacking. Armights have three different attacks, the first being a stab which it will quickly execute using both swords. The second is a combo, usually composed of double slashes. The final move is a ranged attack in which it will throw both swords in quick succession, although the Armights will draw new swords to replace their old ones. An Armight's entrance is accompanied by a malevolently resonating "ho ho ho!" laugh as it flies into the playable plane.

If not defeated after a certain amount of time, an Armight will simply fly offscreen, facing the screen as it does so.

Name origin
Armight's name is derived from ammonite, the creature which it resembles. The other parts of its name may come from arm, describing its long appendages that end with blades; armor, describing the helmet it wears; might, describing its combat strength; and knight, describing its overall appearance.