The online novel,"The Heaven-Defying Monsters of Online Games". I personally recommend this novel. The protagonist was transmigrated into a little monster, but in the end, he became the invincible Skeleton King. His pet, Little Black, was also very cute. It was a Skeleton King. The style of the novel was light and humorous, and the plot was compact and interesting. I hope you like this fairy's recommendation. Muah ~😗