Kirby: Nightmare in Dream Land artwork
Javelin Knight is the rarer of the Meta-Knights, with few appearances per game. It is a mechanical enemy, a special trait among the Meta-Knights, that resembles a purple and blue droid. It has a round body, with four segments rotating around its lower body. In the middle of its body is a slit, where the eye can be seen. It serves under Meta Knight.
The Javelin Knight appears alongside the other Meta-Knights as a recurring mid-boss. Once Kirby enters the room, Meta Knight gives the command before leaving, and the enemies appear. Javelin Knight's behavior differs from the others, as it hops around the room, firing a javelin every once in a while. Occasionally, once it spawns, it will glide around the room, dangerously swinging a javelin around at a quick pace. As it does this, it is more difficult to attack it with a close range attack, and Kirby is most likely to get hurt.
The Javelin Knight sports the same appearance and behavior as previously, though it appears at will, not requiring the command of Meta Knight. Additionally, its javelin swing has it open up the segment between its head and body, swinging more javelins around at once. It can also be summoned by Galacta Knight, sporting a more ghastly color scheme.
In Meta Knightmare Returns, Meta Knight can call upon Javelin Knight, along with the other the original Meta-Knights from Kirby's Adventure, to perform his strongest special attack, Meta Knightmares, in which they slash through any and all enemies on screen with their respective weapon. Javelin Knight also appears celebrating in the sub-game's ending.