Gregory presides as the enigmatic innkeeper of a purgatorial hotel, channeling suppressed desires and chaos into his domain. This establishment transcends mere lodging, acting as a living embodiment of abandoned dreams and stifled ambitions. The hotel exists as a chaotic limbo where lost souls linger eternally, mirroring Gregory’s conviction in futures shaped by choice yet bound to inevitability.

His origins trace to a childhood morbid fascination with collecting curiosities, commencing at age eight with military relics before escalating to souls burdened by unfulfilled yearnings. This obsession intertwines with his grim duty: harvesting these souls for his abusive mother, whose youth depends on their consumption. Though ruthlessly manipulative, flickers of vulnerability surface, such as his hesitation to save his mother during a pivotal crisis.

Guests encounter a paradoxical host—outwardly courteous yet methodically corrosive. His veneer of aid masks calculated efforts to unravel their psyches, ensuring permanent entrapment. As the hotel’s dimension lord, he enforces its inexorable laws, though his own bids for freedom—like boarding the sentient train in *The Last Train*—invariably crumble, perpetuating his cyclic imprisonment.

Spin-offs like *The Bloody Karte* inject dark humor through his slapstick misfortunes, yet his malice persists. He fabricates blame, notably framing Dr. Fritz for possessing contraband he himself hoarded, and pilfers meals Catherine crafts for Hell’s Chef, underscoring his self-serving duplicity.

A rare manga arc reveals a guest evading his control through genuine human connection, exposing his limitations against authentic bonds. Across all tales, Gregory’s indestructibility and perpetual recurrence cement him as an immutable pillar of the hotel’s nightmare realm, his affable guise ever-shielding a core of coiled menace.