diff --git a/src/gameplay/game.ts b/src/gameplay/game.ts
index 65c42b9ee..ff448c49a 100644
--- a/src/gameplay/game.ts
+++ b/src/gameplay/game.ts
@@ -422,7 +422,7 @@ class Game extends Room {
       // assign them the sockets but with shuffled.
       this.playersInGame[i].username =
         this.socketsOfPlayers[i].request.user.username;
-      this.playersInGame[i].userId = this.socketsOfPlayers[i].request.user._id;
+      this.playersInGame[i].userId = this.socketsOfPlayers[i].request.user.id;
 
       this.playersInGame[i].request = this.socketsOfPlayers[i].request;
 
diff --git a/src/gameplay/types.ts b/src/gameplay/types.ts
index c531cda94..9a3d3e7d7 100644
--- a/src/gameplay/types.ts
+++ b/src/gameplay/types.ts
@@ -34,6 +34,7 @@ export interface See {
 }
 
 export interface IUser {
+  id: string;
   username: string;
   usernameLower?: string;
   password?: string;
@@ -75,7 +76,7 @@ export interface IUser {
   matchmakingBlacklist?: string[];
 
   // Mongoose methods
-  save: () => Promise<void>;
+  save: () => Promise<this>;
   markModified: (path: string) => void;
 }
 
diff --git a/src/routes/forum.ts b/src/routes/forum.ts
index 2849c2ea6..1facdc2a4 100644
--- a/src/routes/forum.ts
+++ b/src/routes/forum.ts
@@ -70,15 +70,15 @@ router.get(
     if (!found.whoLikedId) found.whoLikedId = [];
 
     // person has already liked it, so unlike it and remove their name
-    if (found.whoLikedId.includes(req.user._id)) {
-      const i = found.whoLikedId.indexOf(req.user._id);
+    if (found.whoLikedId.includes(req.user.id)) {
+      const i = found.whoLikedId.indexOf(req.user.id);
       // remove their id
       found.whoLikedId.splice(i, 1);
       found.likes -= 1;
       res.status(200).send('unliked');
     } else {
       // add a like
-      found.whoLikedId.push(req.user._id);
+      found.whoLikedId.push(req.user.id);
       found.likes += 1;
       res.status(200).send('liked');
 
diff --git a/src/routes/forum/forumThreadCommentReplyRoutes.js b/src/routes/forum/forumThreadCommentReplyRoutes.js
index 9166c329a..90b05162f 100644
--- a/src/routes/forum/forumThreadCommentReplyRoutes.js
+++ b/src/routes/forum/forumThreadCommentReplyRoutes.js
@@ -75,7 +75,7 @@ async function createCommentReply(req, res) {
       allowedAttributes: sanitizeHtmlAllowedAttributesForumThread,
     }),
 
-    author: { id: req.user._id, username: req.user.username },
+    author: { id: req.user.id, username: req.user.username },
 
     timeCreated: d,
     timeLastEdit: d,
diff --git a/src/routes/forum/forumThreadCommentRoutes.js b/src/routes/forum/forumThreadCommentRoutes.js
index 2b7420c24..73389c2c6 100644
--- a/src/routes/forum/forumThreadCommentRoutes.js
+++ b/src/routes/forum/forumThreadCommentRoutes.js
@@ -44,7 +44,7 @@ router.post(
         allowedTags: sanitizeHtml.defaults.allowedTags.concat(allowedHtmlTags),
         allowedAttributes: allowedHtmlAttributes,
       }),
-      author: { id: req.user._id, username: req.user.username },
+      author: { id: req.user.id, username: req.user.username },
       timeCreated: new Date(),
       timeLastEdit: new Date(),
       likes: 0,
diff --git a/src/routes/forum/forumThreadRoutes.js b/src/routes/forum/forumThreadRoutes.js
index 3ff553618..e9197e338 100644
--- a/src/routes/forum/forumThreadRoutes.js
+++ b/src/routes/forum/forumThreadRoutes.js
@@ -40,7 +40,7 @@ router.get(
       });
     });
 
-    const userIdString = req.user._id.toString().replace(' ', '');
+    const userIdString = req.user.id.toString().replace(' ', '');
 
     const idsOfLikedPosts = [];
     const addToLikedPosts = (item) => {
@@ -189,7 +189,7 @@ router.post(
       timeLastEdit: new Date(),
       whoLastEdit: req.user.username,
       author: {
-        id: req.user._id,
+        id: req.user.id,
         username: req.user.username,
       },
       comments: [],
diff --git a/src/routes/index.js b/src/routes/index.js
index ac79905ff..e70edb8dd 100644
--- a/src/routes/index.js
+++ b/src/routes/index.js
@@ -914,7 +914,7 @@ router.get('/ajax/hideNotification', (req, res) => {
 router.get('/ajax/hideAllNotifications', (req, res) => {
   // console.log("hide all nofications");
 
-  User.findById(req.user._id)
+  User.findById(req.user.id)
     .populate('notifications')
     .exec(async (err, foundUser) => {
       if (err) {
diff --git a/src/routes/middleware.ts b/src/routes/middleware.ts
index 1e864c9b9..f21328f68 100644
--- a/src/routes/middleware.ts
+++ b/src/routes/middleware.ts
@@ -74,7 +74,7 @@ export const isLoggedIn = asyncMiddleware(async (req, res, next) => {
       res.locals.bansChecked = true;
       // Check bans
       const ban = await Ban.findOne({
-        'bannedPlayer.id': user._id, // User ID match
+        'bannedPlayer.id': user.id, // User ID match
         whenRelease: { $gt: new Date() }, // Unexpired ban
         userBan: true, // User ban
         disabled: false, // Ban must be active
@@ -158,7 +158,7 @@ const checkOwnership = (name, model, query, isOwner) => [
       next();
     } else {
       console.log(
-        `${req.user._id} ${req.user.username} has attempted to do something bad`,
+        `${req.user.id} ${req.user.username} has attempted to do something bad`,
       );
       req.flash('error', 'You are not the owner!');
       res.redirect('back');
@@ -181,7 +181,7 @@ export const checkForumThreadOwnership = checkOwnership(
   (req) => ({
     _id: req.params.id,
   }),
-  (req, thread) => thread.author.id && thread.author.id.equals(req.user._id),
+  (req, thread) => thread.author.id && thread.author.id.equals(req.user.id),
 );
 
 export const checkForumThreadCommentOwnership = checkOwnership(
@@ -190,7 +190,7 @@ export const checkForumThreadCommentOwnership = checkOwnership(
   (req) => ({
     _id: req.params.comment_id,
   }),
-  (req, comment) => comment.author.id && comment.author.id.equals(req.user._id),
+  (req, comment) => comment.author.id && comment.author.id.equals(req.user.id),
 );
 
 export const checkForumThreadCommentReplyOwnership = checkOwnership(
@@ -199,7 +199,7 @@ export const checkForumThreadCommentReplyOwnership = checkOwnership(
   (req) => ({
     _id: req.params.reply_id,
   }),
-  (req, reply) => reply.author.id && reply.author.id.equals(req.user._id),
+  (req, reply) => reply.author.id && reply.author.id.equals(req.user.id),
 );
 
 export const isModMiddleware = (req, res, next) => {
diff --git a/src/routes/mod.js b/src/routes/mod.js
index 06910a78e..90a19ccbb 100644
--- a/src/routes/mod.js
+++ b/src/routes/mod.js
@@ -55,7 +55,7 @@ router.post('/ban', async (req, res) => {
   const userIsPercy = isPercival(req.user.username);
 
   if ((userIsMod ^ userIsPercy) !== 1) {
-    throw Error("Expected requesting user to either be a mod or a Percy.");
+    throw Error('Expected requesting user to either be a mod or a Percy.');
   }
 
   try {
@@ -186,13 +186,13 @@ router.post('/ban', async (req, res) => {
       singleIPBan: req.body['SingleIPBanCheckbox'] === 'on' ? true : false,
       userBan: req.body['userBanCheckbox'] === 'on' ? true : false,
       bannedPlayer: {
-        id: banUser._id,
+        id: banUser.id,
         username: banUser.username,
         usernameLower: banUser.usernameLower,
       },
       bannedIPs: ipsToBan,
       modWhoBanned: {
-        id: modUser._id,
+        id: modUser.id,
         username: modUser.username,
         usernameLower: modUser.usernameLower,
       },
@@ -210,7 +210,7 @@ router.post('/ban', async (req, res) => {
     await ModLog.create({
       type: 'ban',
       modWhoMade: {
-        id: modUser._id,
+        id: modUser.id,
         username: modUser.username,
         usernameLower: modUser.usernameLower,
       },
@@ -218,10 +218,16 @@ router.post('/ban', async (req, res) => {
       dateCreated: new Date(),
     });
 
-    sendToDiscordMods(`${userIsMod ? "Moderator" : "Percival"} "${req.user.usernameLower}" banned "${banUser.usernameLower}" for \
-${req.body['duration']} ${req.body['duration_units']} for reason "${req.body.reason}" with description \
-"${req.body['descriptionByMod']}".`
-      , false);
+    sendToDiscordMods(
+      `${userIsMod ? 'Moderator' : 'Percival'} "${
+        req.user.usernameLower
+      }" banned "${banUser.usernameLower}" for \
+${req.body['duration']} ${req.body['duration_units']} for reason "${
+        req.body.reason
+      }" with description \
+"${req.body['descriptionByMod']}".`,
+      false,
+    );
 
     // Delete all the sessions associated with this username
     const dbResult = await MongoClient.connect(process.env.DATABASEURL);
@@ -355,10 +361,10 @@ router.post('/report', async (req, res) => {
     reason: req.body.reason,
     reportedPlayer: {
       username: reportedUser.username.toLowerCase(),
-      id: reportedUser._id,
+      id: reportedUser.id,
     },
     playerWhoReported: {
-      id: userWhoReported._id,
+      id: userWhoReported.id,
       username: userWhoReported.username.toLowerCase(),
     },
     description: req.body.desc,
diff --git a/src/routes/profile/index.tsx b/src/routes/profile/index.tsx
index 8507ea34e..0a7688a08 100644
--- a/src/routes/profile/index.tsx
+++ b/src/routes/profile/index.tsx
@@ -258,7 +258,7 @@ router.post('/mod/deleteuseravatar', isModMiddleware, async (req, res) => {
   await ModLog.create({
     type: 'avatarDelete',
     modWhoMade: {
-      id: modWhoProcessed._id,
+      id: modWhoProcessed.id,
       username: modWhoProcessed.username,
       usernameLower: modWhoProcessed.usernameLower,
     },
@@ -329,7 +329,7 @@ router.post(
 
       let str = `Your avatar request was approved by ${modWhoProcessed.username}! Their comment was: "${modComment}"`;
       createNotification(
-        userRequestingAvatar._id,
+        userRequestingAvatar.id,
         str,
         '#',
         modWhoProcessed.username,
@@ -342,7 +342,7 @@ router.post(
 
       let str = `Your avatar request was rejected by ${modWhoProcessed.username}. Their comment was: "${modComment}"`;
       createNotification(
-        userRequestingAvatar._id,
+        userRequestingAvatar.id,
         str,
         '#',
         modWhoProcessed.username,
@@ -353,7 +353,7 @@ router.post(
     ModLog.create({
       type: 'avatar',
       modWhoMade: {
-        id: modWhoProcessed._id,
+        id: modWhoProcessed.id,
         username: modWhoProcessed.username,
         usernameLower: modWhoProcessed.usernameLower,
       },
diff --git a/src/sockets/commands/mod/miplinkedaccs.ts b/src/sockets/commands/mod/miplinkedaccs.ts
index f025893ed..f9cf3730a 100644
--- a/src/sockets/commands/mod/miplinkedaccs.ts
+++ b/src/sockets/commands/mod/miplinkedaccs.ts
@@ -93,7 +93,7 @@ export const miplinkedaccs: Command = {
     ModLog.create({
       type: 'miplinkedaccs',
       modWhoMade: {
-        id: modUser._id,
+        id: modUser.id,
         username: modUser.username,
         usernameLower: modUser.usernameLower,
       },
diff --git a/src/sockets/commands/mod/mnotify.ts b/src/sockets/commands/mod/mnotify.ts
index 37d3704b8..1871ec121 100644
--- a/src/sockets/commands/mod/mnotify.ts
+++ b/src/sockets/commands/mod/mnotify.ts
@@ -27,7 +27,7 @@ export const mnotify: Command = {
             classStr: 'server-text',
           });
         } else if (foundUser) {
-          const userIdTarget = foundUser._id;
+          const userIdTarget = foundUser.id;
           const stringToSay = str;
           const link = '#';
 
@@ -43,7 +43,7 @@ export const mnotify: Command = {
             },
             data: {
               targetUser: {
-                id: foundUser._id,
+                id: foundUser.id,
                 username: foundUser.username,
                 usernameLower: foundUser.usernameLower,
               },
diff --git a/src/sockets/commands/mod/munban.ts b/src/sockets/commands/mod/munban.ts
index 3e3efd234..e83eb3184 100644
--- a/src/sockets/commands/mod/munban.ts
+++ b/src/sockets/commands/mod/munban.ts
@@ -33,7 +33,7 @@ export const munban: Command = {
       ModLog.create({
         type: 'munban',
         modWhoMade: {
-          id: modUser._id,
+          id: modUser.id,
           username: modUser.username,
           usernameLower: modUser.usernameLower,
         },