Lessar (レッサー Ressā?) is a character introduced in Toaru Majutsu no Index. A member of New Light, she was introduced late into the story and as an enemy of Touma, but later becomes a valued ally to him as he continues his dealings against the magic side. A sultry seductress, she spends much of her time with Touma trying to find ways to seduce him into joining New Light and working for the United Kingdom.