Martin keeps walking, and Abby's eyes flash. Honestly it's pretty hard to piss Abby off, but Martin does it by just existing.

—Leah Burke on Martin Addison, Leah On The Offbeat

Martin Addison is a student at Shady Creek high school. He is known as the class clown and one of the nerdier kids. He plays a huge role in Simon's life after seeing Simon's emails from a school computer and using them to blackmail Simon to be his wingman for Abby Suso. His brother is gay, he tries very hard to fit in. He pays Fagin in a school production of "Cabaret".