diff --git a/src/components/map/MapTile.js b/src/components/map/MapTile.js
index 5affdf0..640b8aa 100644
--- a/src/components/map/MapTile.js
+++ b/src/components/map/MapTile.js
@@ -6,7 +6,7 @@ import ResetMapIcon from "../../icons/ResetMapIcon";
 import ExpandMoreDotIcon from "../../icons/ExpandMoreDotIcon";
 
 import useDataSource from "../../helpers/useDataSource";
-import { mapSources as defaultMapSources } from "../../maps";
+import { mapSources as defaultMapSources, unknownSource } from "../../maps";
 
 function MapTile({
   map,
@@ -17,7 +17,7 @@ function MapTile({
   onMapReset,
   onDone,
 }) {
-  const mapSource = useDataSource(map, defaultMapSources);
+  const mapSource = useDataSource(map, defaultMapSources, unknownSource);
   const [isMapTileMenuOpen, setIsTileMenuOpen] = useState(false);
   const isDefault = map.type === "default";
   const hasMapState =
diff --git a/src/components/map/MapToken.js b/src/components/map/MapToken.js
index 7161597..f4d80dc 100644
--- a/src/components/map/MapToken.js
+++ b/src/components/map/MapToken.js
@@ -9,11 +9,11 @@ import useDataSource from "../../helpers/useDataSource";
 
 import AuthContext from "../../contexts/AuthContext";
 
-import { tokenSources } from "../../tokens";
+import { tokenSources, unknownSource } from "../../tokens";
 
 function MapToken({ token, tokenState, tokenSizePercent, className }) {
   const { userId } = useContext(AuthContext);
-  const imageSource = useDataSource(token, tokenSources);
+  const imageSource = useDataSource(token, tokenSources, unknownSource);
 
   const imageRef = useRef();
   // Stop touch to prevent 3d touch gesutre on iOS
diff --git a/src/components/token/ListToken.js b/src/components/token/ListToken.js
index bbdb3a2..690d593 100644
--- a/src/components/token/ListToken.js
+++ b/src/components/token/ListToken.js
@@ -4,10 +4,10 @@ import { Box, Image } from "theme-ui";
 import usePreventTouch from "../../helpers/usePreventTouch";
 import useDataSource from "../../helpers/useDataSource";
 
-import { tokenSources } from "../../tokens";
+import { tokenSources, unknownSource } from "../../tokens";
 
 function ListToken({ token, className }) {
-  const imageSource = useDataSource(token, tokenSources);
+  const imageSource = useDataSource(token, tokenSources, unknownSource);
 
   const imageRef = useRef();
   // Stop touch to prevent 3d touch gesutre on iOS
diff --git a/src/components/token/TokenTile.js b/src/components/token/TokenTile.js
index 78df16b..4d521db 100644
--- a/src/components/token/TokenTile.js
+++ b/src/components/token/TokenTile.js
@@ -4,10 +4,13 @@ import { Flex, Image, Text, Box, IconButton } from "theme-ui";
 import RemoveMapIcon from "../../icons/RemoveMapIcon";
 
 import useDataSource from "../../helpers/useDataSource";
-import { tokenSources as defaultTokenSources } from "../../tokens";
+import {
+  tokenSources as defaultTokenSources,
+  unknownSource,
+} from "../../tokens";
 
 function TokenTile({ token, isSelected, onTokenSelect, onTokenRemove }) {
-  const tokenSource = useDataSource(token, defaultTokenSources);
+  const tokenSource = useDataSource(token, defaultTokenSources, unknownSource);
   const isDefault = token.type === "default";
 
   return (
diff --git a/src/contexts/TokenDataContext.js b/src/contexts/TokenDataContext.js
index 096d006..31ad185 100644
--- a/src/contexts/TokenDataContext.js
+++ b/src/contexts/TokenDataContext.js
@@ -46,7 +46,6 @@ export function TokenDataProvider({ children }) {
   }
 
   async function removeToken(id) {
-    // TODO when removing token also remove it from all states that reference it and replicate
     await database.table("tokens").delete(id);
     setTokens((prevTokens) => {
       const filtered = prevTokens.filter((token) => token.id !== id);
diff --git a/src/helpers/useDataSource.js b/src/helpers/useDataSource.js
index 4af57a1..6dc39b8 100644
--- a/src/helpers/useDataSource.js
+++ b/src/helpers/useDataSource.js
@@ -2,14 +2,14 @@ import { useEffect, useState } from "react";
 
 // Helper function to load either file or default data
 // into a URL and ensure that it is revoked if needed
-function useDataSource(data, defaultSources) {
+function useDataSource(data, defaultSources, unknownSource) {
   const [dataSource, setDataSource] = useState(null);
   useEffect(() => {
     if (!data) {
-      setDataSource(null);
+      setDataSource(unknownSource);
       return;
     }
-    let url = null;
+    let url = unknownSource;
     if (data.type === "file") {
       url = URL.createObjectURL(new Blob([data.file]));
     } else if (data.type === "default") {
@@ -22,7 +22,7 @@ function useDataSource(data, defaultSources) {
         URL.revokeObjectURL(url);
       }
     };
-  }, [data, defaultSources]);
+  }, [data, defaultSources, unknownSource]);
 
   return dataSource;
 }
diff --git a/src/maps/Unknown Grid 22x22.jpg b/src/maps/Unknown Grid 22x22.jpg
new file mode 100644
index 0000000..d4e9933
Binary files /dev/null and b/src/maps/Unknown Grid 22x22.jpg differ
diff --git a/src/maps/index.js b/src/maps/index.js
index 9fe93d7..4fdaf4d 100644
--- a/src/maps/index.js
+++ b/src/maps/index.js
@@ -5,6 +5,8 @@ import stoneImage from "./Stone Grid 22x22.jpg";
 import waterImage from "./Water Grid 22x22.jpg";
 import woodImage from "./Wood Grid 22x22.jpg";
 
+import unknownImage from "./Unknown Grid 22x22.jpg";
+
 export const mapSources = {
   blank: blankImage,
   grass: grassImage,
@@ -23,3 +25,5 @@ export const maps = Object.keys(mapSources).map((key) => ({
   height: 1024,
   type: "default",
 }));
+
+export const unknownSource = unknownImage;
diff --git a/src/modals/SettingsModal.js b/src/modals/SettingsModal.js
index 43fbe55..61a75ee 100644
--- a/src/modals/SettingsModal.js
+++ b/src/modals/SettingsModal.js
@@ -18,7 +18,26 @@ function SettingsModal({ isOpen, onRequestClose }) {
 
   async function handleClearCache() {
     await database.table("maps").where("owner").notEqual(userId).delete();
-    // TODO: With custom tokens look up all tokens that aren't being used in a state
+    // Find all other peoples tokens who aren't benig used in a map state and delete them
+    const tokens = await database
+      .table("tokens")
+      .where("owner")
+      .notEqual(userId)
+      .toArray();
+    const states = await database.table("states").toArray();
+    for (let token of tokens) {
+      let inUse = false;
+      for (let state of states) {
+        for (let tokenState of Object.values(state.tokens)) {
+          if (token.id === tokenState.tokenId) {
+            inUse = true;
+          }
+        }
+      }
+      if (!inUse) {
+        database.table("tokens").delete(token.id);
+      }
+    }
     window.location.reload();
   }
 
diff --git a/src/routes/Game.js b/src/routes/Game.js
index 39b10fc..edc5cb6 100644
--- a/src/routes/Game.js
+++ b/src/routes/Game.js
@@ -219,9 +219,11 @@ function Game() {
       ) {
         sentTokens[tokenState.tokenId] = true;
         const token = getToken(tokenState.tokenId);
-        // Omit file from token peer will request file if needed
-        const { file, ...rest } = token;
-        peer.connection.send({ id: "token", data: rest });
+        if (token) {
+          // Omit file from token peer will request file if needed
+          const { file, ...rest } = token;
+          peer.connection.send({ id: "token", data: rest });
+        }
       }
     }
   }
diff --git a/src/tokens/Unknown.png b/src/tokens/Unknown.png
new file mode 100644
index 0000000..8987eed
Binary files /dev/null and b/src/tokens/Unknown.png differ
diff --git a/src/tokens/index.js b/src/tokens/index.js
index c6a3a0f..8293d84 100644
--- a/src/tokens/index.js
+++ b/src/tokens/index.js
@@ -29,6 +29,7 @@ import titan from "./Titan.png";
 import undead from "./Undead.png";
 import warlock from "./Warlock.png";
 import wizard from "./Wizard.png";
+import unknown from "./Unknown.png";
 
 export const tokenSources = {
   barbarian,
@@ -69,3 +70,5 @@ export const tokens = Object.keys(tokenSources).map((key) => ({
   name: key.charAt(0).toUpperCase() + key.slice(1),
   type: "default",
 }));
+
+export const unknownSource = unknown;