Absorb is an upgrade from the Slush Invaders: Game. It is Stickirby's ability to drain the health of an enemy and give it to another limited health Slush Fighter (<left<). This is also Stickirby's unlockable after the level Blue Base in NG+ mode.
- The upgrade doesn't necessarily absorb the target, rather Sitckirby just copies them, and gives half of their life force to his teammate.
- The upgrade shows two Drabs being absorbed by Stickirby, though this doesn't happen in-game, nor do the effects happen as well.
- The icon next to the heart icon is a homeage to Kirby.
- This adds to the fact that Stickirby is, for most if not the whole part, technically a homage to the Kirby series himself.