Who are the hunters of the dream?

Every single person who can be summoned by the Old Hunter's Bell (which includes Alfred, Gascoigne, and Henryk, among many others), as well as Djura and Eileen, have all been hunters of the dream, based on dialogue and item descriptions.

How do I get back to the Hunter's Dream?

Your character can be transported back to the Hunter's Dream by speaking with Gatekeeper Messengers in the field. The Hunter's Dream acts as a central hub and sanctuary for the Hunter, where items can be purchased and weapons can be upgraded, as well as a connection to every other location in game.

Is rem a dream hunter?

Dream Hunter Rem (ドリームハンター麗夢 [c], Dorīmu Hantā Remu) is a Japanese OVA series released from 1985 to 1992. Rem Ayanokōji is a "dream hunter", a person capable of entering the dreams of sleeping people and fighting the demons causing nightmares.

What are the trunks around the Hunter's Dream?

Speaking of cooperation, the many trunks that surround the Hunter's Dream (called "Shrine" in the game files) might be other Hunter's Dream of persons that are living your same experience on another dimensional plane, of which the Resonant Bells make mention to justify multiplayers interaction canonically.