She is voiced by Yukari Tamura.
Superficially, Lugh is a sweet and obedient little girl, but, in truth, she's really a conniving little evil witch. Lugh believes that results are more important than dreams, and that having tomorrow’s lunch is more important than having friends. She is a hard worker, and does her work to ingratiate herself to the most powerful students at the Belphegor Academy of Sorcery. She tends to ally with powerful people one day because it benefits her, and will betray them the next when they get in the way of her goals.