I think I saw something turquoise inside of the battle form's mouth on page 12. It's not glowing on that page, so I assume Mu decided to keep his human appearance, because why not.
Good guy Allen translating and posting chapters like a bat out of hell.
No wonder prince Zhus father was so confident, Jukun just woke up a sleeping dragon. Rank one battle puppet is op and no one but, Mu and soul friends or a peak heaven tier can beat one.
I had a feeling that he was going to incorporate the holy body material that was taken from Angel Slaying Eagle. Whether it's his actual body or not is to be determined but, even if it was he can transform back. It seems being a soul tier is essentially akin to being immortal. Mu needs to start buying Xian Dan from hamster face.