The Troll Tower
"Who said you can leave?" and even in the face of retreating enemies, William didn't show a single speck of mercy, "go, kill everyone, spare none!" and with a wave of his hand, he released the four monstrous beasts he made so far, unleashed them over his enemies.
Each weapon was the size of a huge truck. After William evolved the first two and made sure to use very rare and precious materials to make the other two, the four were looking like hell gatekeepers.
They roared, and with their giant bodies and such a fierce roar, coupled with the attack William launched, more masters got scared and started to run for their lives.
But many masters stood their ground, activated their spirits, and came for him.
"Dark master! I knew it!" The moment they activated their spirit bodies, and used their techniques, it was easy for William to guess the spirit elements they were using, guessing their identities.