Xenosaga Episode II: Jenseits von Gut und Bose - Vs. Mikumari

The final bonus boss of Episode II for the E.S. Switches between an attack phase known as Creeping Mode and a passive phase called Pure Mode. It typically focuses its attacks on whoever attacked it last, barring the occasional multi-target attacks. One of the strangest flukes is that by using Down Ethers during Pure mode, it will openly heal you for massive amounts of HP, making the battle a little bit easier. Unfortunately, as its health goes down, it stays in Creeping mode more and more and Pure mode less and less, until finally it stays in Creeping mode.