Samuel, Keeper of Challenges.
On the Tallowmere Xbox One build, "Challenge" is a reserved word, so he's then called Samuel, Keeper of Conquests.
Lady Tallowmere. Keeper of the dungeon. She creates a new dungeon for the player every time they play, and she offers you healing.
The Punisher. Lets the player activate various "Punishments" to make the dungeon harder.
Wandering Merchant. The player can buy and sell things from the merchant. There's one in the home room, and various merchants throughout the dungeon.
Old Man Mazaar. Small-time lore-keeper. Holds a potion for the hero to retrieve for the Kidnapping event later in the game.
Esmerelda. Caretaker for Lady Tallowmere's sacrificial kittens.
Mr Bigguns. Lady Tallowmere's cat. Has a role in the Kidnapping event.
Tireless Guard. Stands guard at the start of the dungeon.
Apparition of Tallowmere. Image of Tallowmere that appears in various rooms, offering a heal and words of encouragement.
Archer. Wields a bow and arrow.
Leaper. Has blades for hands and leaps at the player.
Zaerie. Flying monster. Holds a buzzsaw. Play-on of the word "faerie".
Ogre. Throws purple bottles that can stun the player.
Bloat. Short, stumpy creatures filled with a volatile concoction. Explodes on death, stunning nearby enemies and players alike. Can suicide using the dagger it's holding.
Feeler. Flying bug. Has a long tongue that can pull the player.
Conductor. Casts lightning bolts.
Fire Mage. Casts balls of fire.
Flail Knight. Swings a ball and chain.
Jazza. Flying mechanical nightmare. Launches orbs.
Hydra. Spits acid.
Axe. Basic melee weapon.
Grenades. Thrown. Explosive.
Emerald Dagger. Short-ranged melee weapon. Allows the player to become stealthed after a moment if they're on the ground.
Does extra damage when backstabbing.
Flag. Lady Tallowmere's flag in the Capture the Flag event room.
Flamethrower. It's a flamethrower.
Ice Wand. Launches ice bolts if standing still.
Katana. Melee weapon. Teleports the player to a random nearby enemy.
Mr Bigguns. Not really a weapon, but you hold Mr Bigguns for Mr Bigguns' Shield Challenge.
Rocket Launcher. Fires rockets.
Spiked Club. Melee weapon. Knocks enemies back.
Pinwheel. Spiky obstacle that spins and moves back and forth.
Spike trap. Static spikes that are sharp to the touch.
Acid trap. A skull that emits a cloud of acid.