Dimitri Patans is a 78 year old Warden who is the leader of the Slammer a Prison that had no Breakouts in the past 5x years he is the major Antagonist of ThatOneIdiotNamedGhoul's life since he arrested her Mother and falsely-imprisoned her when Undertale was young and was responsible for LegendarySi's Father vanishing when Si was only 2 years old.