Yor Forger is one of three main characters of the Spy x Family series. She works as a clerk at Berlint City Hall, but is secretly a skilled assassin who acts under the codename Thorn Princess. Yor possesses impressive strength and endurance for her slim frame, capable of easily piercing the skull of a human with her weapons and destroying a pumpkin with the sheer thrust of her bare hand. She agrees in pretending to be Loid's wife and Anya's mother in order to serve as cover so she can continue with her assassin work. Yor is consistently bad at cooking and usually leaves the cooking to Loid.

Shiba Tatsuya is a first year student in Course 2 of the First High School. He is the eldest son of Four Leaves Technology (FLT) company's president, part of the Yotsuba clan. His only sibling is Shiba Miyuki. Since he was born in April and Miyuki born in March, they are studying in the same year according to Japanese school system. Miyuki scores at the top of the class of freshmen, while Tatsuya scores near the bottom in the technical skills portion. The school is split between the high scoring students, blooms, and the low scoring students, weeds. Tatsuya appears to have a very cold personality except when it comes to his sister and his friends. (Source: Baka-tsuki, Mahouka Koukou no Rettousei Light Novel)