diff --git a/packages/hydrooj/package.json b/packages/hydrooj/package.json
index d5e547cc8..7bcdefb86 100644
--- a/packages/hydrooj/package.json
+++ b/packages/hydrooj/package.json
@@ -1,6 +1,6 @@
 {
     "name": "hydrooj",
-    "version": "2.30.5",
+    "version": "2.30.6",
     "bin": "bin/hydrooj.js",
     "main": "src/loader",
     "module": "src/loader",
diff --git a/packages/hydrooj/src/model/builtin.ts b/packages/hydrooj/src/model/builtin.ts
index fcd1efe28..08e32ff88 100644
--- a/packages/hydrooj/src/model/builtin.ts
+++ b/packages/hydrooj/src/model/builtin.ts
@@ -226,6 +226,7 @@ PERM.PERM_ADMIN = PERM.PERM_ALL;
 
 export const PRIV = {
     PRIV_NONE: 0,
+    PRIV_MOD_BADGE: 1 << 25,
     PRIV_EDIT_SYSTEM: 1 << 0, // renamed from PRIV_SET_PRIV
     PRIV_SET_PERM: 1 << 1,
     PRIV_USER_PROFILE: 1 << 2,
diff --git a/packages/ui-default/common/variables.inc.styl b/packages/ui-default/common/variables.inc.styl
index 26887d177..b4e94bf13 100644
--- a/packages/ui-default/common/variables.inc.styl
+++ b/packages/ui-default/common/variables.inc.styl
@@ -175,6 +175,7 @@ $notification-icon = {
 // Badge
 $badge-text-color = {
   'mod': #FFF,
+  'su': #FFF,
   'lv0': #727171,
   'lv1': #FFF,
   'lv2': #FFF,
@@ -189,6 +190,7 @@ $badge-text-color = {
 }
 $badge-bg-color = {
   'mod': #cf70ab,
+  'su': #ff0000,
   'lv0': #efefef,
   'lv1': #9db4bd,
   'lv2': #9db4bd,
diff --git a/packages/ui-default/locales/zh.yaml b/packages/ui-default/locales/zh.yaml
index 9a335753d..70bb59793 100644
--- a/packages/ui-default/locales/zh.yaml
+++ b/packages/ui-default/locales/zh.yaml
@@ -440,6 +440,7 @@ Memory: 内存
 Message {0} not found.: 消息 {0} 不存在。
 Messages: 消息
 Method: 方法
+Moderator: 管理员
 Month: 月
 Monthly Popular: 月度最受欢迎
 Most Upvoted Solutions: 最被赞同的题解
@@ -557,8 +558,8 @@ problem_submit: 递交代码
 problem_type.default: 传统题
 problem_type.fileio: '文件IO ({0})'
 problem_type.interactive: 交互题
-problem_type.remote_judge: 远端评测题
 problem_type.objective: 客观题
+problem_type.remote_judge: 远端评测题
 problem_type.submit_answer: 提交答案题
 problem-category-delim: '|'
 problem-subcategory-delim: 、
@@ -710,6 +711,7 @@ Submit to Judge: 递交以评测
 Submit Your Code: 递交代码进行正式评测
 Submit: 递交
 Submitted: 已递交
+SuperUser: 超级管理员
 Support: 支持
 Tags: 标签
 tasks_list: 任务列表
diff --git a/packages/ui-default/package.json b/packages/ui-default/package.json
index 5acd06db7..c74db4497 100644
--- a/packages/ui-default/package.json
+++ b/packages/ui-default/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@hydrooj/ui-default",
-  "version": "4.14.4",
+  "version": "4.14.5",
   "author": "undefined <i@undefined.moe>",
   "license": "AGPL-3.0",
   "main": "hydro.js",
diff --git a/packages/ui-default/pages/user_detail.page.styl b/packages/ui-default/pages/user_detail.page.styl
index d9d584549..b37ec25c3 100644
--- a/packages/ui-default/pages/user_detail.page.styl
+++ b/packages/ui-default/pages/user_detail.page.styl
@@ -59,6 +59,10 @@
       color: rgba(#FFF, 1)
       text-decoration: none
 
+    &.badge--su
+      background-color: rgba(#FFF, 0.8) !important
+      color: rgba(#000, 0.8) !important
+
     &.badge--mod
       background-color: rgba(#FFF, 0.8) !important
       color: rgba(#000, 0.8) !important
diff --git a/packages/ui-default/templates/components/user.html b/packages/ui-default/templates/components/user.html
index 2d60503df..52cbd2cb6 100644
--- a/packages/ui-default/templates/components/user.html
+++ b/packages/ui-default/templates/components/user.html
@@ -13,9 +13,13 @@
   </a>
   {% if badge %}
     {% set level = udoc.level|default(0) %}
-    <a class="user-profile-badge v-center badge--lv{{ level }}" href="{{ url('user_detail', uid=udoc._id) }}" title="LV {{ level }}: Top {{ model.builtin.LEVELS[level]|default('N/A') }}%">LV {{ level }}</a>
-    {% if modbadge and udoc.hasPerm(perm.PERM_MOD_BADGE) %}
-      <span class="user-profile-badge v-center badge--mod" title="Moderator">MOD</span>
+    <a class="user-profile-badge v-center badge--lv{{ level }}" href="{{ url('user_detail', uid=udoc._id) }}" data-tooltip="LV {{ level }}: Top {{ model.builtin.LEVELS[level]|default('N/A') }}%">LV {{ level }}</a>
+    {% if modbadge %}
+      {% if udoc.hasPriv(PRIV.PRIV_MOD_BADGE) %}
+        <span class="user-profile-badge v-center badge--su" data-tooltip="{{ _('SuperUser') }}">SU</span>
+      {% elif udoc.hasPerm(perm.PERM_MOD_BADGE) %}
+        <span class="user-profile-badge v-center badge--mod" data-tooltip="{{ _('Moderator') }}">MOD</span>
+      {% endif %}
     {% endif %}
   {% endif %}
 </span>
diff --git a/packages/ui-default/templates/domain_permission.html b/packages/ui-default/templates/domain_permission.html
index f3fe341b3..39a2ecb94 100644
--- a/packages/ui-default/templates/domain_permission.html
+++ b/packages/ui-default/templates/domain_permission.html
@@ -30,7 +30,7 @@
               {%- for role in roles -%}
                 <td class="col--p">
                   <label class="compact checkbox">
-                    <input name="{{ role._id }}" data-checkbox-group="{{ role._id }}" data-checkbox-range value="{{ log2(perm.key) }}" type="checkbox"{% if role.perm|bitand(perm.key) %} checked{% endif %}{% if role._id == 'admin' %} disabled{% endif %}>
+                    <input name="{{ role._id }}" data-checkbox-group="{{ role._id }}" data-checkbox-range value="{{ log2(perm.key) }}" type="checkbox"{% if role.perm|bitand(perm.key) %} checked{% endif %}{% if role._id == 'root' %} disabled{% endif %}>
                   </label>
                 </td>
               {%- endfor -%}
diff --git a/packages/ui-default/templates/domain_role.html b/packages/ui-default/templates/domain_role.html
index 28fedbaf3..633c5d8d2 100644
--- a/packages/ui-default/templates/domain_role.html
+++ b/packages/ui-default/templates/domain_role.html
@@ -47,7 +47,7 @@
       </thead>
       <tbody>
       {%- for role in roles -%}
-        {% set isBuiltin = role._id in ['default', 'guest', 'admin'] %}
+        {% set isBuiltin = role._id in ['default', 'guest', 'root'] %}
         <tr{% if not isBuiltin %} data-role="{{ role._id }}"{% endif %}>
           <td class="col--checkbox">
             <label class="compact checkbox">