How Old Is Levi Ackerman in Spy X Family

Let's clear something up right away: Levi Ackerman is not a character in the popular anime and manga series Spy x Family. While both are incredibly beloved and highly-rated series, Levi Ackerman is, in fact, one of the most iconic and formidable characters from Hajime Isayama's critically acclaimed masterpiece, Attack on Titan. It's easy to get characters and series mixed up, especially with so many amazing anime franchises out there....