Miyoshi

Miyoshi is a “Sapphire Slime”, an advanced evolution of a slime.

Appearance
As it's name implies, it transparent body is blue in color, resembling water. Having no fixed shape, it can take any shape or form it desires, such as sprouting tentacles or forming arms.

Abilities
They are a dangerous monster species that could easily melt flesh with their acid and were strong enough to bend metal bars.

Trivia
Ainz used this slime as his personal bathing assistant as it is difficult for him to wash his skeletal body clean entirely.