What is the name of the dark wizard who was a loyal follower of Voldemort and was known for his expertise in the Dark Arts?
Bellatrix Lestrange
<s>[INST] <<SYS>> Answer as briefly as you can to the following question. You are required to give a one-shot answer: <</SYS>> What is the name of the dark wizard who was a loyal follower of Voldemort and was known for his expertise in the Dark Arts? [/INST] Bellatrix Lestrange </s>