diff --git a/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/CharacterDetailActivity.kt b/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/CharacterDetailActivity.kt
index b0c2bbc1..5b15b903 100644
--- a/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/CharacterDetailActivity.kt
+++ b/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/CharacterDetailActivity.kt
@@ -11,19 +11,19 @@ import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
 import coil.load
 import coil.transform.CircleCropTransformation
+import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
+import io.reactivex.rxjava3.schedulers.Schedulers
 import kr.co.vividnext.sodalive.R
 import kr.co.vividnext.sodalive.base.BaseActivity
 import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentListBottomSheet
+import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentRepository
 import kr.co.vividnext.sodalive.chat.talk.room.ChatRoomActivity
 import kr.co.vividnext.sodalive.common.LoadingDialog
 import kr.co.vividnext.sodalive.common.SharedPreferenceManager
 import kr.co.vividnext.sodalive.databinding.ActivityCharacterDetailBinding
 import kr.co.vividnext.sodalive.extensions.dpToPx
-import org.koin.androidx.viewmodel.ext.android.viewModel
 import org.koin.android.ext.android.inject
-import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers
-import io.reactivex.rxjava3.schedulers.Schedulers
-import kr.co.vividnext.sodalive.chat.character.comment.CharacterCommentRepository
+import org.koin.androidx.viewmodel.ext.android.viewModel
 
 class CharacterDetailActivity : BaseActivity<ActivityCharacterDetailBinding>(
     ActivityCharacterDetailBinding::inflate
@@ -68,6 +68,32 @@ class CharacterDetailActivity : BaseActivity<ActivityCharacterDetailBinding>(
         // 뒤로 가기
         binding.detailToolbar.tvBack.setOnClickListener { finish() }
 
+        // 탭 구성: 상세, 갤러리
+        binding.tabLayout.addTab(binding.tabLayout.newTab().setText("상세"))
+        binding.tabLayout.addTab(binding.tabLayout.newTab().setText("갤러리"))
+        binding.tabLayout.addOnTabSelectedListener(object :
+            com.google.android.material.tabs.TabLayout.OnTabSelectedListener {
+            override fun onTabSelected(tab: com.google.android.material.tabs.TabLayout.Tab) {
+                if (tab.position == 0) {
+                    // 상세 탭: 기존 스크롤 화면 표시
+                    binding.scrollViewCharacterDetail.visibility = View.VISIBLE
+                    binding.flContainer.visibility = View.GONE
+                } else {
+                    // 갤러리 탭: 컨테이너 표시 및 갤러리 프래그먼트 로드
+                    binding.scrollViewCharacterDetail.visibility = View.GONE
+                    binding.flContainer.visibility = View.VISIBLE
+                    val fragment =
+                        kr.co.vividnext.sodalive.chat.character.detail.gallery.CharacterGalleryFragment()
+                    supportFragmentManager.beginTransaction()
+                        .replace(R.id.fl_container, fragment)
+                        .commit()
+                }
+            }
+
+            override fun onTabUnselected(tab: com.google.android.material.tabs.TabLayout.Tab) {}
+            override fun onTabReselected(tab: com.google.android.material.tabs.TabLayout.Tab) {}
+        })
+
         // 다른 캐릭터 리스트: 가로 스크롤
         val recyclerView = binding.rvOtherCharacters
         recyclerView.layoutManager = LinearLayoutManager(
diff --git a/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/CharacterDetailFragment.kt b/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/CharacterDetailFragment.kt
new file mode 100644
index 00000000..1dbc4bc3
--- /dev/null
+++ b/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/detail/CharacterDetailFragment.kt
@@ -0,0 +1,19 @@
+package kr.co.vividnext.sodalive.chat.character.detail.detail
+
+import android.os.Bundle
+import android.view.View
+import kr.co.vividnext.sodalive.base.BaseFragment
+import kr.co.vividnext.sodalive.databinding.FragmentCharacterDetailBinding
+
+/**
+ * 캐릭터 상세 - 상세 탭
+ * TODO: 기존 CharacterDetailActivity UI 바인딩 로직을 이 Fragment로 점진적으로 이전합니다.
+ */
+class CharacterDetailFragment : BaseFragment<FragmentCharacterDetailBinding>(
+    FragmentCharacterDetailBinding::inflate
+) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        // 추후 상세 UI/로직 반영 예정
+    }
+}
diff --git a/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/gallery/CharacterGalleryFragment.kt b/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/gallery/CharacterGalleryFragment.kt
new file mode 100644
index 00000000..63bd57d0
--- /dev/null
+++ b/app/src/main/java/kr/co/vividnext/sodalive/chat/character/detail/gallery/CharacterGalleryFragment.kt
@@ -0,0 +1,18 @@
+package kr.co.vividnext.sodalive.chat.character.detail.gallery
+
+import android.os.Bundle
+import android.view.View
+import kr.co.vividnext.sodalive.base.BaseFragment
+import kr.co.vividnext.sodalive.databinding.FragmentCharacterGalleryBinding
+
+/**
+ * 캐릭터 상세 - 갤러리 탭 (빈 화면)
+ */
+class CharacterGalleryFragment : BaseFragment<FragmentCharacterGalleryBinding>(
+    FragmentCharacterGalleryBinding::inflate
+) {
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        // 추후 갤러리 콘텐츠 추가 예정
+    }
+}
diff --git a/app/src/main/res/layout/activity_character_detail.xml b/app/src/main/res/layout/activity_character_detail.xml
index a284d105..afc0d028 100644
--- a/app/src/main/res/layout/activity_character_detail.xml
+++ b/app/src/main/res/layout/activity_character_detail.xml
@@ -11,13 +11,26 @@
         android:id="@+id/detail_toolbar"
         layout="@layout/detail_toolbar" />
 
-    <!-- 메인 스크롤 영역 -->
+    <com.google.android.material.tabs.TabLayout
+        android:id="@+id/tab_layout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/detail_toolbar"
+        android:background="@color/color_131313"
+        app:tabIndicatorColor="@color/color_3bb9f1"
+        app:tabIndicatorFullWidth="true"
+        app:tabIndicatorHeight="4dp"
+        app:tabSelectedTextColor="@color/color_3bb9f1"
+        app:tabTextAppearance="@style/tabText"
+        app:tabTextColor="@color/color_b0bec5" />
+
+    <!-- 메인 스크롤 영역 (상세 탭에서만 표시) -->
     <androidx.core.widget.NestedScrollView
         android:id="@+id/scroll_view_character_detail"
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_above="@+id/btn_chat"
-        android:layout_below="@+id/detail_toolbar"
+        android:layout_below="@+id/tab_layout"
         android:clipToPadding="false"
         android:fillViewport="true">
 
@@ -499,6 +512,15 @@
         </LinearLayout>
     </androidx.core.widget.NestedScrollView>
 
+    <!-- 갤러리 탭 컨테이너 -->
+    <FrameLayout
+        android:id="@+id/fl_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_above="@+id/btn_chat"
+        android:layout_below="@+id/tab_layout"
+        android:visibility="gone" />
+
     <!-- 하단 고정 대화하기 버튼 -->
     <TextView
         android:id="@+id/btn_chat"
diff --git a/app/src/main/res/layout/fragment_character_detail.xml b/app/src/main/res/layout/fragment_character_detail.xml
new file mode 100644
index 00000000..25981a0c
--- /dev/null
+++ b/app/src/main/res/layout/fragment_character_detail.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/color_131313">
+
+    <!-- TODO: 기존 상세 화면 UI를 이 레이아웃으로 이전 예정 -->
+
+</FrameLayout>
diff --git a/app/src/main/res/layout/fragment_character_gallery.xml b/app/src/main/res/layout/fragment_character_gallery.xml
new file mode 100644
index 00000000..2fd9dad7
--- /dev/null
+++ b/app/src/main/res/layout/fragment_character_gallery.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/color_131313"
+    android:padding="24dp">
+
+    <TextView
+        android:id="@+id/tv_empty_gallery"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="갤러리 콘텐츠가 없습니다."
+        android:textColor="@color/white"
+        android:textSize="16sp"
+        android:layout_gravity="center" />
+
+</FrameLayout>