3 Headed Ghast

The 3 Headed Ghast was a powerful creature.

Summoning
It was summoned by Unknown Pokemon to destroy Wizzro's Machine which tries to ressurect Wither Boss Storm. The Ghast summons other ghasts and they attack Wizzro.

Vanishment
The Ghasts attack the machine and destroy it at the cost of their lives. The 3 Headed Ghast survives but the other Ghasts are killed.