Nicholas Lovof is a nobleman leading an anti-Scout faction aligned with the Lang Company. He exhibits a selfish and greedy personality, employing brutal methods to achieve his objectives. Lovof demonstrates manipulative tendencies, using blackmail to control others for personal gain. His opposition to Scout Regiment expeditions stems purely from financial motivations, showing disregard for humanity's future.

Depictions of his physical appearance vary. The anime portrays a middle-aged man with a receding dark hairline slicked back, a prominent mustache, sunken eyes, and a stern expression. He typically wears a gray blazer, red tie, and white shirt. The manga presents an elderly version featuring shoulder-length hair, a longer back-length hairstyle, and a full mustache and beard.

Lovof orchestrates a scheme to redirect military funds away from the Survey Corps. He manipulates Levi Ackerman, Furlan Church, and Isabel Magnolia by holding their associate Yan hostage, offering surface citizenship and money in exchange for assassinating Erwin Smith and retrieving incriminating documents. Lovof arranges their infiltration into the Survey Corps for this purpose, ensuring contact regardless of their decision.

During an expedition, as Levi attempts the mission, Erwin reveals that documents exposing Lovof's corruption and fund-siphoning were already delivered to Commander Dhalis Zachary. This exposure leads to Lovof facing punishment. His actions highlight a pattern of political manipulation, including efforts to convince parliament to defund Scout expeditions entirely before temporarily reversing his stance under pressure.

Lovof operates cautiously, implementing contingency plans and eliminating threats. His character arc concludes with the consequences of his corruption being formally addressed after the failed assassination plot.