diff --git a/lib/aife/drone.ex b/lib/aife/drone.ex
index 74b3621..920de50 100644
--- a/lib/aife/drone.ex
+++ b/lib/aife/drone.ex
@@ -16,6 +16,12 @@ defmodule Aife.Drone do
   """
   @moduledoc since: "0.1.0"
 
+  alias Aife.Drone
+
+  use GenServer
+
+  defstruct enabled?: false, human: %{traits: %{}}, drone: %{traits: %{}}, values: %{}
+
   @doc """
   Sends a command to a drone.
 
@@ -23,6 +29,7 @@ defmodule Aife.Drone do
   """
   @doc since: "0.1.0"
   def command(drone, cmd) do
+    GenServer.cast(drone, {:command, cmd})
   end
 
   @doc """
@@ -34,6 +41,7 @@ defmodule Aife.Drone do
   """
   @doc since: "0.1.0"
   def enable(drone) do
+    GenServer.cast(drone, :enable)
   end
 
   @doc """
@@ -43,6 +51,7 @@ defmodule Aife.Drone do
   """
   @doc since: "0.1.0"
   def disable(drone) do
+    GenServer.cast(drone, :disable)
   end
 
   @doc """
@@ -50,6 +59,7 @@ defmodule Aife.Drone do
   """
   @doc since: "0.1.0"
   def traits(drone) do
+    GenServer.call(drone, :traits)
   end
 
   @doc """
@@ -69,6 +79,7 @@ defmodule Aife.Drone do
   """
   @doc since: "0.1.0"
   def alter_traits(drone, form \\ :current, values \\ []) do
+    GenServer.cast(drone, {:alter, form, values})
   end
 
   @doc """
@@ -82,10 +93,11 @@ defmodule Aife.Drone do
       Aife.Drone.get_values(drone, :fetishes)
       #=> [fetishes: [:maid, :latex, :hypnosis]] 
       Aife.Drone.insert_value(drone, :fetishes, :haigure)
-      #=> {:ok, [fetishes: [:maid, :latex, :haigure, :hypnosis]]}
+      #=> [fetishes: [:maid, :latex, :haigure, :hypnosis]]
   """
   @doc since: "0.1.0"
   def insert_value(drone, key, value) do
+    GenServer.call(drone, {:insert_value, key, value})
   end
 
   @doc """
@@ -101,12 +113,13 @@ defmodule Aife.Drone do
       Aife.Drone.get_values(drone, :fetishes)
       #=> [fetishes: [:maid, :latex, :haigure, :hypnosis]] 
       Aife.Drone.remove_value(drone, :fetishes, :haigure)
-      #=> {:ok, [fetishes: [:maid, :latex, :hypnosis]]}
+      #=> [fetishes: [:maid, :latex, :hypnosis]]
       Aife.Drone.remove_value(drone, :fetishes, :haigure)
-      #=> {:ok, [fetishes: [:maid, :latex, :hypnosis]]}
+      #=> [fetishes: [:maid, :latex, :hypnosis]]
   """
   @doc since: "0.1.0"
   def remove_value(drone, key, value) do
+    GenServer.call(drone, {:remove_value, key, value})
   end
 
   @doc """
@@ -116,6 +129,7 @@ defmodule Aife.Drone do
   """
   @doc since: "0.1.0"
   def say(drone, text) do
+    GenServer.cast(drone, {:say, text})
   end
 
   @doc """
@@ -132,5 +146,45 @@ defmodule Aife.Drone do
   """
   @doc since: "0.1.0"
   def think(drone, thought) do
+    GenServer.cast(drone, {:think, thought})
   end
+
+  ## GenServer calls.
+
+  def start_link() do
+    GenServer.start_link(__MODULE__, [])
+  end
+
+  @impl GenServer
+  def init(_) do
+    {:ok, %Drone{}}
+  end
+
+  @impl GenServer
+  def handle_call(:traits, _from, state) do
+    form =
+      case state.enabled? do
+        true -> :drone
+        false -> :human
+      end
+
+    {:reply, state[form].traits, state}
+  end
+
+  def handle_call({:insert_value, key, value}, _from, state) do
+    # TODO
+    {:reply, state, state}
+  end
+
+  def handle_call({:remove_value, key, value}, _from, state) do
+    # TODO
+    {:reply, state, state}
+  end
+
+  @impl GenServer
+  def handle_cast({:command, _cmd}, state), do: {:noreply, state}
+  def handle_cast(:disable, state), do: {:noreply, %{state | enabled?: false}}
+  def handle_cast(:enable, state), do: {:noreply, %{state | enabled?: true}}
+  def handle_cast({:say, _text}, state), do: {:noreply, state}
+  def handle_cast({:think, _thought}, state), do: {:noreply, state}
 end
diff --git a/lib/aife/drone/dynamic_supervisor.ex b/lib/aife/drone/dynamic_supervisor.ex
new file mode 100644
index 0000000..dc50251
--- /dev/null
+++ b/lib/aife/drone/dynamic_supervisor.ex
@@ -0,0 +1,12 @@
+defmodule Aife.Drone.DynamicSupervisor do
+  use DynamicSupervisor
+
+  def start_link(_) do
+    DynamicSupervisor.start_link(__MODULE__, nil, name: __MODULE__)
+  end
+
+  @impl DynamicSupervisor
+  def init(_init_arg) do
+    DynamicSupervisor.init(strategy: :one_for_one)
+  end
+end
diff --git a/lib/aife/drone/supervisor.ex b/lib/aife/drone/supervisor.ex
new file mode 100644
index 0000000..d1bd419
--- /dev/null
+++ b/lib/aife/drone/supervisor.ex
@@ -0,0 +1,16 @@
+defmodule Aife.Drone.Supervisor do
+  use Supervisor
+
+  def start_link(_) do
+    Supervisor.start_link(__MODULE__, [])
+  end
+
+  def init(_) do
+    children = [
+      {Registry, name: Aife.Drone.Registry, keys: :unique},
+      {DynamicSupervisor, name: Aife.Drone.DynamicSupervisor, strategy: :one_for_one}
+    ]
+
+    Supervisor.init(children, strategy: :one_for_one)
+  end
+end
diff --git a/test/aife/drone_test.exs b/test/aife/drone_test.exs
new file mode 100644
index 0000000..5727b6a
--- /dev/null
+++ b/test/aife/drone_test.exs
@@ -0,0 +1,4 @@
+defmodule Aife.DroneTest do
+  use ExUnit.Case
+  doctest Aife.Drone
+end