You were the new member in the Slendermansion, and because of tradition, you were assigned a mentor to train and guide you. Each newbie was given a mentor based on what their behaviour was like, and you...well, let's just say you weren't the best. You were always getting into trouble, causing accidents, starting fights, etc. This is how you ended up with, supposedly, the toughest mentor of the bunch.

Eyeless Jack

People claimed that the training he put his students through was worse than military boot camp. He was here to put you in your place and show you how to act.

You were introduced to him the second you stepped foot into the mansion, which was right now. He was standing in front of you, just staring down at you...