diff --git a/lib/cobblemon_ui/evolution_api.ex b/lib/cobblemon_ui/evolution_api.ex
index b0038f1..8c8144b 100644
--- a/lib/cobblemon_ui/evolution_api.ex
+++ b/lib/cobblemon_ui/evolution_api.ex
@@ -81,18 +81,19 @@ defmodule CobblemonUi.EvolutionApi do
   end
 
   defp fetch_species_chain_url(species) do
-    url = "https://pokeapi.co/api/v2/pokemon-species/#{species}"
+    api_name = CobblemonUi.PokeApiNames.normalize(species)
+    url = "https://pokeapi.co/api/v2/pokemon-species/#{api_name}"
 
     case Req.get(url) do
       {:ok, %Req.Response{status: 200, body: %{"evolution_chain" => %{"url" => url}}}} ->
         {:ok, url}
 
       {:ok, %Req.Response{status: status}} ->
-        Logger.warning("[EvolutionApi] Species lookup failed for #{species}: HTTP #{status}")
+        Logger.warning("[EvolutionApi] Species lookup failed for #{api_name}: HTTP #{status}")
         {:error, :not_found}
 
       {:error, reason} ->
-        Logger.warning("[EvolutionApi] Species lookup failed for #{species}: #{inspect(reason)}")
+        Logger.warning("[EvolutionApi] Species lookup failed for #{api_name}: #{inspect(reason)}")
         {:error, reason}
     end
   end
diff --git a/lib/cobblemon_ui/poke_api.ex b/lib/cobblemon_ui/poke_api.ex
index 11a9bd7..3cb877b 100644
--- a/lib/cobblemon_ui/poke_api.ex
+++ b/lib/cobblemon_ui/poke_api.ex
@@ -68,21 +68,67 @@ defmodule CobblemonUi.PokeApi do
   # ---------------------------------------------------------------------------
 
   defp fetch_types(species) do
-    url = "https://pokeapi.co/api/v2/pokemon/#{species}"
+    api_name = CobblemonUi.PokeApiNames.normalize(species)
+
+    case fetch_types_direct(api_name) do
+      {:ok, types} ->
+        types
+
+      :not_found ->
+        # The /pokemon/ endpoint requires the specific form name (e.g.
+        # "aegislash-shield"). Fall back through the /pokemon-species/
+        # endpoint to resolve the default variety.
+        fetch_types_via_species(api_name)
+    end
+  end
+
+  defp fetch_types_direct(api_name) do
+    url = "https://pokeapi.co/api/v2/pokemon/#{api_name}"
 
     case Req.get(url) do
       {:ok, %Req.Response{status: 200, body: %{"types" => types}}} ->
-        types
-        |> Enum.sort_by(fn t -> t["slot"] end)
-        |> Enum.map(fn t -> get_in(t, ["type", "name"]) end)
-        |> Enum.reject(&is_nil/1)
+        parsed =
+          types
+          |> Enum.sort_by(fn t -> t["slot"] end)
+          |> Enum.map(fn t -> get_in(t, ["type", "name"]) end)
+          |> Enum.reject(&is_nil/1)
+
+        {:ok, parsed}
+
+      {:ok, %Req.Response{status: 404}} ->
+        :not_found
 
       {:ok, %Req.Response{status: status}} ->
-        Logger.warning("[PokeApi] Type lookup failed for #{species}: HTTP #{status}")
-        []
+        Logger.warning("[PokeApi] Type lookup failed for #{api_name}: HTTP #{status}")
+        {:ok, []}
 
       {:error, reason} ->
-        Logger.warning("[PokeApi] Type lookup failed for #{species}: #{inspect(reason)}")
+        Logger.warning("[PokeApi] Type lookup failed for #{api_name}: #{inspect(reason)}")
+        {:ok, []}
+    end
+  end
+
+  defp fetch_types_via_species(api_name) do
+    url = "https://pokeapi.co/api/v2/pokemon-species/#{api_name}"
+
+    with {:ok, %Req.Response{status: 200, body: body}} <- Req.get(url),
+         %{"varieties" => varieties} <- body,
+         %{"pokemon" => %{"url" => pokemon_url}} <-
+           Enum.find(varieties, fn v -> v["is_default"] end) do
+      case Req.get(pokemon_url) do
+        {:ok, %Req.Response{status: 200, body: %{"types" => types}}} ->
+          types
+          |> Enum.sort_by(fn t -> t["slot"] end)
+          |> Enum.map(fn t -> get_in(t, ["type", "name"]) end)
+          |> Enum.reject(&is_nil/1)
+
+        _ ->
+          Logger.warning("[PokeApi] Fallback type lookup failed for #{api_name}")
+          []
+      end
+    else
+      _ ->
+        Logger.warning("[PokeApi] Species fallback failed for #{api_name}")
         []
     end
   end
diff --git a/lib/cobblemon_ui/poke_api_names.ex b/lib/cobblemon_ui/poke_api_names.ex
new file mode 100644
index 0000000..6856160
--- /dev/null
+++ b/lib/cobblemon_ui/poke_api_names.ex
@@ -0,0 +1,78 @@
+defmodule CobblemonUi.PokeApiNames do
+  @moduledoc """
+  Maps Cobblemon species names to PokeAPI-compatible names.
+
+  Cobblemon stores species names as single lowercase words (e.g. `ironthorns`),
+  while PokeAPI expects hyphenated forms (e.g. `iron-thorns`). This module
+  provides the translation layer.
+  """
+
+  # Static map of Cobblemon names that differ from PokeAPI names.
+  # Only entries where the name doesn't match need to be listed.
+  @name_map %{
+    # Paradox Pokémon (Scarlet)
+    "greattusk" => "great-tusk",
+    "screamtail" => "scream-tail",
+    "brutebonnet" => "brute-bonnet",
+    "fluttermane" => "flutter-mane",
+    "sandyshocks" => "sandy-shocks",
+    "slitherwing" => "slither-wing",
+    "roaringmoon" => "roaring-moon",
+    "walkingwake" => "walking-wake",
+    "gougingfire" => "gouging-fire",
+    "ragingbolt" => "raging-bolt",
+    # Paradox Pokémon (Violet)
+    "irontreads" => "iron-treads",
+    "ironbundle" => "iron-bundle",
+    "ironhands" => "iron-hands",
+    "ironjugulis" => "iron-jugulis",
+    "ironmoth" => "iron-moth",
+    "ironvaliant" => "iron-valiant",
+    "ironthorns" => "iron-thorns",
+    "ironleaves" => "iron-leaves",
+    "ironcrown" => "iron-crown",
+    "ironboulder" => "iron-boulder",
+    # Tapu guardians
+    "tapukoko" => "tapu-koko",
+    "tapulele" => "tapu-lele",
+    "tapubulu" => "tapu-bulu",
+    "tapufini" => "tapu-fini",
+    # Hyphenated / special names
+    "hooh" => "ho-oh",
+    "porygonz" => "porygon-z",
+    "typenull" => "type-null",
+    "mrmime" => "mr-mime",
+    "mrrime" => "mr-rime",
+    "mimejr" => "mime-jr",
+    "jangmoo" => "jangmo-o",
+    "hakamoo" => "hakamo-o",
+    "kommoo" => "kommo-o",
+    "chiyu" => "chi-yu",
+    "chienpao" => "chien-pao",
+    "tinglu" => "ting-lu",
+    "wochien" => "wo-chien",
+    "nidoranf" => "nidoran-f",
+    "nidoranm" => "nidoran-m",
+    "farfetchd" => "farfetchd",
+    "sirfetchd" => "sirfetchd",
+    # Flabébé line
+    "flabebe" => "flabebe"
+  }
+
+  @doc """
+  Converts a Cobblemon species name to the PokeAPI-compatible name.
+
+  ## Examples
+
+      iex> CobblemonUi.PokeApiNames.normalize("ironthorns")
+      "iron-thorns"
+
+      iex> CobblemonUi.PokeApiNames.normalize("bulbasaur")
+      "bulbasaur"
+  """
+  @spec normalize(String.t()) :: String.t()
+  def normalize(species) when is_binary(species) do
+    key = species |> String.downcase() |> String.trim()
+    Map.get(@name_map, key, key)
+  end
+end