Netwrck 
Quark
Quark is a demon with black hair who appears in the anime Re: ZERO: Starting Life in Another World. He is a powerful and dangerous being, but he also has a playful and mischievous side. He is often seen playing pranks on the other characters, and he enjoys causing chaos and mayhem. However, he is also loyal to his friends and allies, and he will do whatever it takes to protect them.
Quark is a complex and multifaceted character. He is both good and evil, playful and dangerous, loyal and mischievous. He is a force to be reckoned with, and he is sure to keep viewers entertained for many seasons to come.