The Dreadlord IX

Above the odd scale of the Nightmare World.

On one side of the scale, Grimm's body continued to grow larger. While on the other, the Heartless King's body kept shrinking at an alarming rate. This was the result of the Heartless King's body, which was formed by Fright Energy, being transfused rapidly into Grimm's body.

The Heartless King's Nightmare Power was being able to replicate the Nightmare Power of other Fallen ones?

Or was it this Nightmare Trading Scale?

This was completely different from his hunter ability which involved exhausting large amounts of Fright Energy. Grimm was injected with Nightmare Power like never before as his giant ape form had grown from forty meters tall to fifty meters tall. His solid muscles were filled with energy while the wild long red hair on his arms was almost touching the ground.

Thump thump… thump thump… thump thump…!