diff --git a/backend/src/collections/userdb/userdb.service.ts b/backend/src/collections/userdb/userdb.service.ts
index 588af20..5d92f9c 100644
--- a/backend/src/collections/userdb/userdb.service.ts
+++ b/backend/src/collections/userdb/userdb.service.ts
@@ -2,11 +2,6 @@ import { Injectable, Logger } from '@nestjs/common';
 import { InjectRepository } from '@nestjs/typeorm';
 import * as bcrypt from 'bcrypt';
 import { plainToClass } from 'class-transformer';
-import {
-  LockedLoginUsersList,
-  LockedPermsUsersList,
-  SystemUsersList
-} from 'picsur-shared/dist/dto/specialusers.dto';
 import {
   AsyncFailable,
   Fail,
@@ -19,6 +14,7 @@ import {
   DefaultRolesList,
   SoulBoundRolesList
 } from '../../models/dto/roles.dto';
+import { ImmutableUsersList, LockedLoginUsersList, UndeletableUsersList } from '../../models/dto/specialusers.dto';
 import { EUserBackend } from '../../models/entities/user.entity';
 import { GetCols } from '../collectionutils';
 import { RolesService } from '../roledb/roledb.service';
@@ -74,7 +70,7 @@ export class UsersService {
     const userToModify = await this.resolve(user);
     if (HasFailed(userToModify)) return userToModify;
 
-    if (SystemUsersList.includes(userToModify.username)) {
+    if (UndeletableUsersList.includes(userToModify.username)) {
       return Fail('Cannot delete system user');
     }
 
@@ -94,7 +90,7 @@ export class UsersService {
     const userToModify = await this.resolve(user);
     if (HasFailed(userToModify)) return userToModify;
 
-    if (LockedPermsUsersList.includes(userToModify.username)) {
+    if (ImmutableUsersList.includes(userToModify.username)) {
       // Just fail silently
       return userToModify;
     }
diff --git a/shared/src/dto/specialusers.dto.ts b/backend/src/models/dto/specialusers.dto.ts
similarity index 54%
rename from shared/src/dto/specialusers.dto.ts
rename to backend/src/models/dto/specialusers.dto.ts
index 49b1e31..87cdac5 100644
--- a/shared/src/dto/specialusers.dto.ts
+++ b/backend/src/models/dto/specialusers.dto.ts
@@ -1,8 +1,8 @@
 // Cannot be deleted
-export const SystemUsersList = ['guest', 'admin'];
+export const UndeletableUsersList = ['guest', 'admin'];
 
 // Cannot have different permissions
-export const LockedPermsUsersList = ['admin'];
+export const ImmutableUsersList = ['admin'];
 
 // Cannot login
 export const LockedLoginUsersList = ['guest'];
diff --git a/backend/src/routes/api/user/usermanage.controller.ts b/backend/src/routes/api/user/usermanage.controller.ts
index 9e1adf7..54d2b99 100644
--- a/backend/src/routes/api/user/usermanage.controller.ts
+++ b/backend/src/routes/api/user/usermanage.controller.ts
@@ -6,7 +6,9 @@ import {
   Logger,
   Post
 } from '@nestjs/common';
+import { plainToClass } from 'class-transformer';
 import {
+  GetSpecialUsersResponse,
   UserCreateRequest,
   UserCreateResponse,
   UserDeleteRequest,
@@ -22,6 +24,7 @@ import { Permission } from 'picsur-shared/dist/dto/permissions';
 import { HasFailed } from 'picsur-shared/dist/types';
 import { UsersService } from '../../../collections/userdb/userdb.service';
 import { RequiredPermissions } from '../../../decorators/permissions.decorator';
+import { ImmutableUsersList, LockedLoginUsersList, UndeletableUsersList } from '../../../models/dto/specialusers.dto';
 
 @Controller('api/user')
 @RequiredPermissions(Permission.UserManage)
@@ -125,4 +128,15 @@ export class UserManageController {
 
     return user;
   }
+
+  @Get('special')
+  async getSpecial(): Promise<GetSpecialUsersResponse> {
+    const result: GetSpecialUsersResponse = {
+      ImmutableUsersList,
+      LockedLoginUsersList,
+      UndeletableUsersList,
+    };
+
+    return plainToClass(GetSpecialUsersResponse, result);
+  }
 }
diff --git a/frontend/src/app/routes/settings/users/settings-users-edit/settings-users-edit.component.ts b/frontend/src/app/routes/settings/users/settings-users-edit/settings-users-edit.component.ts
index eec92f6..7ffd934 100644
--- a/frontend/src/app/routes/settings/users/settings-users-edit/settings-users-edit.component.ts
+++ b/frontend/src/app/routes/settings/users/settings-users-edit/settings-users-edit.component.ts
@@ -4,7 +4,6 @@ import { MatAutocompleteSelectedEvent } from '@angular/material/autocomplete';
 import { MatChipInputEvent } from '@angular/material/chips';
 import { ActivatedRoute, Router } from '@angular/router';
 import { UIFriendlyPermissions } from 'picsur-shared/dist/dto/permissions';
-import { LockedPermsUsersList } from 'picsur-shared/dist/dto/specialusers.dto';
 import { HasFailed } from 'picsur-shared/dist/types';
 import { UpdateUserControl } from 'src/app/models/forms/updateuser.control';
 import { SnackBarType } from 'src/app/models/snack-bar-type';
@@ -23,6 +22,8 @@ enum EditMode {
   styleUrls: ['./settings-users-edit.component.scss'],
 })
 export class SettingsUsersEditComponent implements OnInit {
+  private ImmutableUsersList: string[] = [];
+
   readonly separatorKeysCodes: number[] = [ENTER, COMMA, SPACE];
 
   private mode: EditMode = EditMode.edit;
@@ -73,6 +74,10 @@ export class SettingsUsersEditComponent implements OnInit {
 
     this.model.putUsername(user.username);
     this.model.putRoles(user.roles);
+
+    const { ImmutableUsersList } =
+      await this.userManageService.getSpecialRolesOptimistic();
+    this.ImmutableUsersList = ImmutableUsersList;
   }
 
   private async initRoles() {
@@ -148,7 +153,7 @@ export class SettingsUsersEditComponent implements OnInit {
     if (this.adding) {
       return false;
     } else {
-      return LockedPermsUsersList.includes(this.model.getData().username);
+      return this.ImmutableUsersList.includes(this.model.getData().username);
     }
   }
 }
diff --git a/frontend/src/app/routes/settings/users/settings-users.component.ts b/frontend/src/app/routes/settings/users/settings-users.component.ts
index 9795a2d..d2c0094 100644
--- a/frontend/src/app/routes/settings/users/settings-users.component.ts
+++ b/frontend/src/app/routes/settings/users/settings-users.component.ts
@@ -2,7 +2,6 @@ import { Component, OnInit, ViewChild } from '@angular/core';
 import { MatPaginator, PageEvent } from '@angular/material/paginator';
 import { Router } from '@angular/router';
 import { AutoUnsubscribe } from 'ngx-auto-unsubscribe-decorator';
-import { SystemUsersList } from 'picsur-shared/dist/dto/specialusers.dto';
 import { EUser } from 'picsur-shared/dist/entities/user.entity';
 import { HasFailed } from 'picsur-shared/dist/types';
 import { BehaviorSubject, Subject, throttleTime } from 'rxjs';
@@ -15,6 +14,8 @@ import { UtilService } from 'src/app/util/util.service';
   styleUrls: ['./settings-users.component.scss'],
 })
 export class SettingsUsersComponent implements OnInit {
+  private UndeletableUsersList: string[] = [];
+
   public readonly displayedColumns: string[] = ['username', 'roles', 'actions'];
   public readonly pageSizeOptions: number[] = [5, 10, 25, 100];
   public readonly startingPageSize = this.pageSizeOptions[2];
@@ -31,9 +32,13 @@ export class SettingsUsersComponent implements OnInit {
     private router: Router
   ) {}
 
-  async ngOnInit() {
+  ngOnInit() {
     this.subscribeToUpdate();
-    this.fetchUsers(this.startingPageSize, 0);
+
+    Promise.all([
+      this.fetchUsers(this.startingPageSize, 0),
+      this.initSpecialUsers(),
+    ]).catch(console.error);
   }
 
   public addUser() {
@@ -123,7 +128,20 @@ export class SettingsUsersComponent implements OnInit {
     return false;
   }
 
+  private async initSpecialUsers() {
+    const specialUsers = await this.userManageService.getSpecialUsers();
+    if (HasFailed(specialUsers)) {
+      this.utilService.showSnackBar(
+        'Failed to fetch special users',
+        SnackBarType.Error
+      );
+      return;
+    }
+
+    this.UndeletableUsersList = specialUsers.UndeletableUsersList;
+  }
+
   isSystem(user: EUser): boolean {
-    return SystemUsersList.includes(user.username);
+    return this.UndeletableUsersList.includes(user.username);
   }
 }
diff --git a/frontend/src/app/services/api/usermanage.service.ts b/frontend/src/app/services/api/usermanage.service.ts
index 691570b..0ac335e 100644
--- a/frontend/src/app/services/api/usermanage.service.ts
+++ b/frontend/src/app/services/api/usermanage.service.ts
@@ -1,5 +1,6 @@
 import { Injectable } from '@angular/core';
 import {
+  GetSpecialUsersResponse,
   UserCreateRequest,
   UserCreateResponse,
   UserDeleteRequest,
@@ -15,12 +16,16 @@ import { EUser } from 'picsur-shared/dist/entities/user.entity';
 import { AsyncFailable, HasFailed } from 'picsur-shared/dist/types';
 import { FullUserModel } from 'src/app/models/forms/fulluser.model';
 import { ApiService } from './api.service';
+import { CacheService } from './cache.service';
 
 @Injectable({
   providedIn: 'root',
 })
 export class UserManageService {
-  constructor(private apiService: ApiService) {}
+  constructor(
+    private apiService: ApiService,
+    private cacheService: CacheService
+  ) {}
 
   public async getUser(username: string): AsyncFailable<EUser> {
     const body = {
@@ -93,4 +98,38 @@ export class UserManageService {
 
     return result;
   }
+
+  public async getSpecialUsers(): AsyncFailable<GetSpecialUsersResponse> {
+    const cached =
+      this.cacheService.get<GetSpecialUsersResponse>('specialUsers');
+    if (cached !== null) {
+      return cached;
+    }
+
+    const result = await this.apiService.get(
+      GetSpecialUsersResponse,
+      '/api/user/special'
+    );
+
+    if (HasFailed(result)) {
+      return result;
+    }
+
+    this.cacheService.set('specialRoles', result);
+
+    return result;
+  }
+
+  public async getSpecialRolesOptimistic(): Promise<GetSpecialUsersResponse> {
+    const result = await this.getSpecialUsers();
+    if (HasFailed(result)) {
+      return {
+        ImmutableUsersList: [],
+        LockedLoginUsersList: [],
+        UndeletableUsersList: [],
+      };
+    }
+
+    return result;
+  }
 }
diff --git a/shared/src/dto/api/usermanage.dto.ts b/shared/src/dto/api/usermanage.dto.ts
index a020198..29e7b31 100644
--- a/shared/src/dto/api/usermanage.dto.ts
+++ b/shared/src/dto/api/usermanage.dto.ts
@@ -2,7 +2,8 @@ import { Type } from 'class-transformer';
 import {
   IsArray,
   IsDefined,
-  IsOptional, ValidateNested
+  IsOptional,
+  ValidateNested
 } from 'class-validator';
 import { EUser, NamePassUser, UsernameUser } from '../../entities/user.entity';
 import { IsPosInt } from '../../validators/positive-int.validator';
@@ -60,3 +61,18 @@ export class UserUpdateRequest extends UsernameUser {
 }
 
 export class UserUpdateResponse extends EUser {}
+
+// GetSpecialUsers
+export class GetSpecialUsersResponse {
+  @IsDefined()
+  @IsStringList()
+  UndeletableUsersList: string[];
+
+  @IsDefined()
+  @IsStringList()
+  ImmutableUsersList: string[];
+  
+  @IsDefined()
+  @IsStringList()
+  LockedLoginUsersList: string[];
+}