Double-face Demon King was a special monster that was formed by the faith of countless mortals mixed with demonic Qi. Although it was a King-tier monster, it did not have a real body.
Although it was an energy body, it had a huge restriction. It could not be transformed from an energy body into a physical body.
It usually maintained its illusory state, and if it wanted to appear in front of the world with a physical body, it had to borrow the body of other creatures.
Possessing a low-level monster was just the first step of the double-faced Demon King's manifestation. Its purpose was to build an energy transmission channel.
After the passage was completed, double-face Demon King would descend through the passage and squeeze into the monster's body.
During the process of arrival, double-faced Demon King would control the monster's body, causing it to expand rapidly.
The possessed monster might never have imagined how terrifyingly large its 'tiny' body would be!