The Shapeshifting Invader (real name currently unknown) is an invader that appeared in Space Invaders Part II. It has the special ability to grow and shrink, making it harder or easier to hit with a missile.
The Shapeshifting Invader has a very similar appearance to that of the Small Invader. As it has a triangular head and 2 eyes. However, the Shapeshifting Invader only has 2 appendages and no visible mouth.
The Shapeshifting Invader can grow to approximately the same size as the Small Invader and shrink to about half it's original size, making it harder for the player to shoot it down.