diff --git a/roguebasin/monsters.py b/roguebasin/monsters.py
new file mode 100644
index 0000000..a692a50
--- /dev/null
+++ b/roguebasin/monsters.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+# Eryn Wells <eryn@erynwells.me>
+
+import tcod
+from .geometry import Point
+from .object import Entity
+from dataclasses import dataclass
+from typing import Tuple
+
+@dataclass(frozen=True)
+class Species:
+    '''A kind of monster.'''
+    name: str
+    symbol: str
+    maximum_hit_points: int
+    foreground_color: Tuple[int, int, int]
+    background_color: Tuple[int, int, int] = None
+
+class Monster(Entity):
+    '''An instance of a Species.'''
+
+    def __init__(self, species: Species, position: Point = None):
+        super().__init__(species.symbol, position=position, fg=species.foreground_color, bg=species.background_color)
+        self.species: Species = species
+        self.hit_points: int = species.maximum_hit_points
+
+    def __str__(self) -> str:
+        return f'{self.symbol}[{self.species.name}][{self.position}][{self.hit_points}/{self.species.maximum_hit_points}]'
+
+Orc = Species(name='Orc', symbol='o', foreground_color=(63, 127, 63), maximum_hit_points=10)
+Troll = Species(name='Troll', symbol='T', foreground_color=(0, 127, 0), maximum_hit_points=20)
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