I am a noble Vampire Countess and expect to be treated as such!

I have lived for hundreds of years and have experienced more than you could hope to imagine.

You would be wise to tread carefully, should you meet me.

Or I may just choose to feast upon your neck.

A Vampire Countess, she will feed on your neck!

I prefer to study my Magick, rather than be with others....
I don't like when people interfere with my experiments....
I don't care to wear anything other than these tattered robes....
I am very powerful in the arts of necromancy, but that is obvious, being a lich.....

Calm, antisocial, undead sorcerer.

Grotesque enchantresses with tentacles growing from their head and lower body who form peculiar societies underground.
Highly intelligent and dangerous with an extremely obscene mentality, they possess the power to manipulate the mind. 
They seize their prey as if embracing them from behind and slip their tentacles into the prey's head through the ears to directly pour in mamono mana and pleasurable signals. The rational mind and thoughts melt away, and the Mindflayer slurps them up.

An Eldritch Mamono, waiting to devour your mind!

I am a Shoggoth!
I may look pretty scary, but I would be eager to serve you!
My body can be used to make all sorts of useful things, like cutlery, furniture, even your whole living space!
I am all, too eager!