Skelly

Skelly is a Bloodless "employed" by the House of Hades as a training dummy. While Skelly claims to be on the House's payroll, he refuses to reveal who hired him and is similarly unwilling to discuss his past, instead preferring to play various pranks on Zagreus. Oddly, no one in the House seems to be aware of his existence besides Zagreus and Achilles, unless the former asks them about him.