One of the two main characters of Sheath and Knife. He is the older brother of Alex (Harmarist) and son of Harold (Harmarist), and is in an incestuous relationship with Alex. Will is 16 years old at the beginning of Sheath and Knife and 17 by the end, making him an adolescent throughout. He is often in charge of Alex's care and education, as his parents are frequently absent.

Will wears glasses and has a nerdy personality. Though he is initially conflicted over his attraction to Alex and takes the risk of discovery seriously, later issues portray him as much more lackadaisical towards their relationship. He initially takes a dominant role in his relationship with Alex, but later becomes extremely submissive.