diff --git a/waifu/datasets/characterai.py b/waifu/datasets/characterai.py
new file mode 100644
index 0000000..38e6ee4
--- /dev/null
+++ b/waifu/datasets/characterai.py
@@ -0,0 +1,75 @@
+import json
+import os
+import typing as t
+from dataclasses import dataclass
+
+import mashumaro
+
+from waifu.datasets import BaseDataset
+from waifu.utils.dataset import get_data_path
+
+
+@dataclass(frozen=True)
+class CaiBotInfo(mashumaro.DataClassDictMixin):
+    name: str
+    title: str
+    description: str
+    greeting: str
+
+
+@dataclass(frozen=True)
+class CaiChat:
+    # First message is the bot's greeting, the one afterwards is the user.
+    messages: t.List[str]
+    bot_info: CaiBotInfo
+
+
+class CharacterAiDataset(BaseDataset[CaiChat]):
+    '''Dataset for CharacterAI dumps.'''
+
+    def generator(self) -> t.Generator[CaiChat, None, None]:
+        for folder in _enumerate_bot_folders():
+            info_path = os.path.join(folder, "info.json")
+            histories_path = os.path.join(folder, "histories.json")
+
+            with open(info_path, "r", encoding="utf-8") as info_file, \
+                open(histories_path, "r", encoding="utf-8") as histories_file:
+                info_json = json.load(info_file)
+                histories_json = json.load(histories_file)
+
+            bot_info = CaiBotInfo.from_dict(info_json["character"])
+
+            for history_dict in histories_json["histories"]:
+                messages = _messages_from_dict(history_dict["msgs"])
+                yield CaiChat(bot_info=bot_info, messages=messages)
+
+
+#
+# Private helpers.
+#
+
+
+def _enumerate_bot_folders() -> list[str]:
+    '''Returns a list of folders available in the CAI data folder.'''
+    dataset_path = get_data_path(dataset_name="test_characterai_dumps")
+    items = os.listdir(dataset_path)
+
+    folders: list[str] = []
+    for item in items:
+        item_path = os.path.join(dataset_path, item)
+        if os.path.isfile(item_path):
+            # We only care about folders.
+            continue
+
+        absolute_folder_path = os.path.abspath(os.path.join(dataset_path, item))
+        folders.append(absolute_folder_path)
+
+    return folders
+
+
+def _messages_from_dict(msgs_dict: list[dict[str, t.Any]]) -> list[str]:
+    '''Builds an array of messages from an entry from the `histories` JSON.'''
+    messages: list[str] = []
+    for raw_message in msgs_dict:
+        messages.append(raw_message["text"])
+    return messages
diff --git a/waifu/modules/characterai_pdm.py b/waifu/modules/characterai_pdm.py
new file mode 100644
index 0000000..9f4918b
--- /dev/null
+++ b/waifu/modules/characterai_pdm.py
@@ -0,0 +1,25 @@
+import typing as t
+
+from waifu.datasets.characterai import CharacterAiDataset
+from waifu.modules import BaseModule
+
+USER_PREFIX = "You"
+
+
+class CharacterAiPDM(BaseModule):
+    '''A Persona Dialogue Module powered by CharacterAI data.'''
+
+    def generator(self) -> t.Generator[str, None, None]:
+        for chat in CharacterAiDataset():
+            description_string = f"{chat.bot_info.name}'s Description: {chat.bot_info.description}"
+            # Empty turn to separate description from the messages.
+            turns = [description_string, ""]
+
+            for idx, raw_message in enumerate(chat.messages):
+                if idx % 2 == 0:
+                    message = f"{chat.bot_info.name}: {raw_message}"
+                else:
+                    message = f"{USER_PREFIX}: {raw_message}"
+                turns.append(message)
+
+            yield "\n".join(turns)
diff --git a/waifu/scripts/build_dataset.py b/waifu/scripts/build_dataset.py
index 46a6e99..6f1d15e 100755
--- a/waifu/scripts/build_dataset.py
+++ b/waifu/scripts/build_dataset.py
@@ -14,8 +14,9 @@ from waifu.modules import BaseModule
 # TODO(11b): Needs manual maintenance ot keep up-to-date. Consider doing some
 # metaprogramming trickery to build this list out instead.
 DEFAULT_MODULE_LIST = [
+    "characterai_pdm:CharacterAiPDM",
     "kajiwoto_pdm:KajiwotoPDM",
-    "kajiwoto_vdm:KajiwotoVDM",
+    # "kajiwoto_vdm:KajiwotoVDM",
     "light_dialogue_vdm:LightDialogueVDM",
 ]
 DEFAULT_MODULES_STRING = ",".join(DEFAULT_MODULE_LIST)