First Image of "The General", a new villain in Cave Story 2.
This image, of course, was made very early into the game's production, so his final design will be different.
Concept Art for the "Mutated Core" Boss. It's a boss you fight fairly late in the game, and it's pretty intimidating, even compared to the first Core Battle in Cave Story.
*Please note that the lower image does not represent in-game footage.
The *Vampire*, one of the first new guns in the game steals life from other enemies and gives it to you. However, if the shooter misses its target, the wielder will get part of his own heath stolen, so one must shoot carefully when using this gun.