Agent Markham was a member of the FBI who was assigned to work on Wilson Fisk's detail. During the Battle at Presidential Hotel, Markham stayed to guard Fisk's penthouse and was killed by Benjamin Poindexter.
Markham joined the FBI New York Crime Division and worked under Tammy Hattley's commands. While Wilson Fisk was incarcerated in Ryker's Island, he managed to manipulate Markham in order to make him his personal ally. Markham was at the conference room of the New York City FBI Office where Hattley presented Ray Nadeem as the new agent corrupted by Fisk. Hattley then informed agents about new Fisk's orders and allowed them to operate.
During Fisk's wedding with Vanessa Marianna, Hattley ordered Markham, as well as other agents to secure the Presidential Hotel. Upon Benjamin Poindexter's attack on Marianna, Fisk asked Markham how could this happen and he informed Fisk that Poindexter knows everything about the FBI security protocols. Markham stayed outside of Fisk's penthouse to secure him before he was killed by Poindexter.
- New York City FBI Office: FBI stationed Markham at the headquarters of New York Crime Division in New York City.
- Presidential Hotel: Markham was stationed at the Presidential Hotel to secure Fisk's wedding with Vanessa Marianna. When Benjamin Poindexter attacked the Fisk's wedding, Markham informed him that Poindexter knows about the FBI security protocols before Fisk left him.
- Wilson Fisk/Kingpin - Forced Superior