10. Blackheart

Source: Marvel Comics

9. Clown

Source: Image Comics

8. Etrigan the Demon

Source: DC Comics

Originally a demon from Hell, Etrigan is a muscular humanoid creature with orange or yellow skin, horns, red eyes, and pointed, webbed ears, who is bound to the human, Jason Blood.

7. Malebolgia

Source: Image Comics

6. Zarathos

Source: Marvel Comics

5. Mephisto

Source: Marvel Comics

4. Mr. Kinky

Source: Sirius Entertainment

A suave, 21-st century demon. He quickly becomes Violet Grimm’s boyfriend.

3. Raven

Source: DC Comics

The half-human/half-demon daughter of interdimensional demon father, Trigon, and human mother, Arella.

2. Trigon

Source: DC Comics

A sadistic, cruel, and powerful demon of inter-dimensional origin, Trigon is the ruler of millions of worlds in which he has enslaved.

 1. Hellboy

Source: Dark Horse Comics