diff --git a/docs/api-specs/philosopher-voice-api.md b/docs/api-specs/philosopher-voice-api.md
index 4cff9003..26bdc9a0 100644
--- a/docs/api-specs/philosopher-voice-api.md
+++ b/docs/api-specs/philosopher-voice-api.md
@@ -12,7 +12,7 @@
 
 ### 1.1 목록 조회
 - `GET /api/v1/admin/philosopher-voices`
-- 응답(`PhilosopherVoiceResponse[]`): `id`, `name`, `referenceId`, `voiceLabel`, `note`
+- 응답(`PhilosopherVoiceResponse[]`): `id`, `name`, `referenceId`, `voiceLabel`, `imageKey`, `note`
 
 ### 1.2 생성
 - `POST /api/v1/admin/philosopher-voices`
@@ -20,6 +20,7 @@
   - `name` (필수, 유니크)
   - `referenceId` (필수, Fish Audio 보이스 모델 ID)
   - `voiceLabel` (선택, 표시용 라벨. 예: `"미호크 장정진"`)
+  - `imageKey` (선택, 철학자 이미지 저장 키. 예: `"images/philosophers/rousseau.png"`)
   - `note` (선택)
 - 이름 중복 시 `PHILOSOPHER_VOICE_409_DUP`
 
@@ -39,3 +40,4 @@
 - **NARRATOR / USER 고정 보이스는 이 테이블이 아니라 config** (`fishaudio.voice-id.narrator`, `fishaudio.voice-id.user`). 이 API 는 A/B(철학자) 보이스 전용
 - 붙여넣기 파서가 발화자 이름으로 조회했는데 매핑이 없으면 `MISSING_VOICE` warning(blocking) 을 내고, 관리자가 미리보기에서 보이스를 고르거나 이 API 로 매핑을 추가한 뒤 다시 파싱해야 한다
 - 배틀별로 다른 보이스를 쓰고 싶으면 이 테이블을 바꾸지 않고 시나리오의 `voiceSettings` 를 직접 오버라이드하면 된다(이 테이블은 파서가 채우는 기본값 소스일 뿐)
+- **`imageKey`**: `PhilosopherType` enum(철학자 유형 10인)만 실제 이미지가 있고, 그 밖의 철학자(예: 루소, 홉스, 쇼펜하우어)는 원래 이름을 해시해서 10개 이미지 중 하나를 무작위로 배정하는 폴백이 있었다(`PhilosopherType.resolveImageKey`) — 엉뚱한 철학자 이미지가 뜨는 문제가 있었음. 프론트는 배틀 생성 화면에서 이 API의 `imageKey` 로 정확한 이미지를 조회해 쓰고, 값이 없으면(아직 등록 안 된 철학자) 기본 이미지로 대체해야 한다. `imageKey` 는 `null` 이어도 되며, 랜덤 배정 로직으로 대신하지 않는다
diff --git a/docs/erd/philosopher-voice.puml b/docs/erd/philosopher-voice.puml
index c7d2923f..fc66a171 100644
--- a/docs/erd/philosopher-voice.puml
+++ b/docs/erd/philosopher-voice.puml
@@ -9,6 +9,7 @@ entity "philosopher_voice" as philosopher_voice {
   name : VARCHAR(50) <<UK>>
   reference_id : VARCHAR(64)
   voice_label : VARCHAR(100) <<nullable>>
+  image_key : VARCHAR(500) <<nullable>>
   note : VARCHAR(255) <<nullable>>
   created_at : TIMESTAMP
   updated_at : TIMESTAMP
@@ -38,6 +39,12 @@ note bottom of philosopher_voice
   voice_code(reference_id) 를 저장하므로 논리적 참조만 존재.
   매핑 변경/추가는 어드민(/api/v1/admin/philosopher-voices)에서 한다.
   초기 데이터는 docs/db/20260910_seed_philosopher_voice.sql.
+
+  image_key : 철학자 이미지 저장 키(S3/Railway Bucket).
+  PhilosopherType enum(철학자 유형 10인) 밖 철학자는 원래
+  이름 해시로 10개 이미지 중 하나를 무작위 배정했는데,
+  그 대신 프론트가 이 값으로 정확한 이미지를 쓰게 하려고 추가.
+  없으면 프론트가 기본 이미지로 대체해야 한다.
 end note
 
 @enduml
diff --git a/src/main/java/com/swyp/picke/domain/admin/dto/philosophervoice/request/PhilosopherVoiceRequest.java b/src/main/java/com/swyp/picke/domain/admin/dto/philosophervoice/request/PhilosopherVoiceRequest.java
index c88d0f54..10be818c 100644
--- a/src/main/java/com/swyp/picke/domain/admin/dto/philosophervoice/request/PhilosopherVoiceRequest.java
+++ b/src/main/java/com/swyp/picke/domain/admin/dto/philosophervoice/request/PhilosopherVoiceRequest.java
@@ -6,5 +6,6 @@ public record PhilosopherVoiceRequest(
         @NotBlank String name,
         @NotBlank String referenceId,
         String voiceLabel,
+        String imageKey,
         String note
 ) {}
diff --git a/src/main/java/com/swyp/picke/domain/admin/dto/philosophervoice/response/PhilosopherVoiceResponse.java b/src/main/java/com/swyp/picke/domain/admin/dto/philosophervoice/response/PhilosopherVoiceResponse.java
index a76bc534..ab894014 100644
--- a/src/main/java/com/swyp/picke/domain/admin/dto/philosophervoice/response/PhilosopherVoiceResponse.java
+++ b/src/main/java/com/swyp/picke/domain/admin/dto/philosophervoice/response/PhilosopherVoiceResponse.java
@@ -7,6 +7,7 @@ public record PhilosopherVoiceResponse(
         String name,
         String referenceId,
         String voiceLabel,
+        String imageKey,
         String note
 ) {
     public static PhilosopherVoiceResponse from(PhilosopherVoice entity) {
@@ -15,6 +16,7 @@ public static PhilosopherVoiceResponse from(PhilosopherVoice entity) {
                 entity.getName(),
                 entity.getReferenceId(),
                 entity.getVoiceLabel(),
+                entity.getImageKey(),
                 entity.getNote()
         );
     }
diff --git a/src/main/java/com/swyp/picke/domain/scenario/entity/PhilosopherVoice.java b/src/main/java/com/swyp/picke/domain/scenario/entity/PhilosopherVoice.java
index ea659781..83fc07cb 100644
--- a/src/main/java/com/swyp/picke/domain/scenario/entity/PhilosopherVoice.java
+++ b/src/main/java/com/swyp/picke/domain/scenario/entity/PhilosopherVoice.java
@@ -28,24 +28,32 @@ public class PhilosopherVoice extends BaseEntity {
     @Column(name = "voice_label", length = 100)
     private String voiceLabel;
 
+    /** 철학자 이미지 저장 키(S3/Railway Bucket). 없으면 프론트가 기본 이미지로 대체해야 한다. */
+    @Column(name = "image_key", length = 500)
+    private String imageKey;
+
     @Column(length = 255)
     private String note;
 
     @Builder
-    public PhilosopherVoice(String name, String referenceId, String voiceLabel, String note) {
+    public PhilosopherVoice(String name, String referenceId, String voiceLabel, String imageKey, String note) {
         this.name = name;
         this.referenceId = referenceId;
         this.voiceLabel = voiceLabel;
+        this.imageKey = imageKey;
         this.note = note;
     }
 
-    public void update(String referenceId, String voiceLabel, String note) {
+    public void update(String referenceId, String voiceLabel, String imageKey, String note) {
         if (referenceId != null && !referenceId.isBlank()) {
             this.referenceId = referenceId;
         }
         if (voiceLabel != null) {
             this.voiceLabel = voiceLabel;
         }
+        if (imageKey != null) {
+            this.imageKey = imageKey;
+        }
         if (note != null) {
             this.note = note;
         }
diff --git a/src/main/java/com/swyp/picke/domain/scenario/service/PhilosopherVoiceService.java b/src/main/java/com/swyp/picke/domain/scenario/service/PhilosopherVoiceService.java
index 9e762064..5a4449a4 100644
--- a/src/main/java/com/swyp/picke/domain/scenario/service/PhilosopherVoiceService.java
+++ b/src/main/java/com/swyp/picke/domain/scenario/service/PhilosopherVoiceService.java
@@ -44,6 +44,7 @@ public PhilosopherVoiceResponse create(PhilosopherVoiceRequest request) {
                 .name(request.name().trim())
                 .referenceId(request.referenceId().trim())
                 .voiceLabel(request.voiceLabel())
+                .imageKey(request.imageKey())
                 .note(request.note())
                 .build());
         return PhilosopherVoiceResponse.from(saved);
@@ -53,7 +54,7 @@ public PhilosopherVoiceResponse create(PhilosopherVoiceRequest request) {
     public PhilosopherVoiceResponse update(Long id, PhilosopherVoiceRequest request) {
         PhilosopherVoice entity = philosopherVoiceRepository.findById(id)
                 .orElseThrow(() -> new CustomException(ErrorCode.PHILOSOPHER_VOICE_NOT_FOUND));
-        entity.update(request.referenceId(), request.voiceLabel(), request.note());
+        entity.update(request.referenceId(), request.voiceLabel(), request.imageKey(), request.note());
         return PhilosopherVoiceResponse.from(entity);
     }
 
diff --git a/src/test/java/com/swyp/picke/domain/scenario/service/PhilosopherVoiceServiceTest.java b/src/test/java/com/swyp/picke/domain/scenario/service/PhilosopherVoiceServiceTest.java
index 49635abd..f1935832 100644
--- a/src/test/java/com/swyp/picke/domain/scenario/service/PhilosopherVoiceServiceTest.java
+++ b/src/test/java/com/swyp/picke/domain/scenario/service/PhilosopherVoiceServiceTest.java
@@ -60,7 +60,7 @@ private PhilosopherVoice entity(String name, String referenceId) {
         when(philosopherVoiceRepository.existsByName("칸트")).thenReturn(true);
 
         assertThatThrownBy(() -> philosopherVoiceService.create(
-                new PhilosopherVoiceRequest("칸트", "voice-x", null, null)))
+                new PhilosopherVoiceRequest("칸트", "voice-x", null, null, null)))
                 .isInstanceOf(CustomException.class)
                 .hasFieldOrPropertyWithValue("errorCode", ErrorCode.PHILOSOPHER_VOICE_DUPLICATED);
 
@@ -74,7 +74,7 @@ private PhilosopherVoice entity(String name, String referenceId) {
                 .thenAnswer(invocation -> invocation.getArgument(0));
 
         PhilosopherVoiceResponse response = philosopherVoiceService.create(
-                new PhilosopherVoiceRequest(" 칸트 ", " voice-x ", "Meursault", null));
+                new PhilosopherVoiceRequest(" 칸트 ", " voice-x ", "Meursault", null, null));
 
         assertThat(response.name()).isEqualTo("칸트");
         assertThat(response.referenceId()).isEqualTo("voice-x");
@@ -86,7 +86,7 @@ private PhilosopherVoice entity(String name, String referenceId) {
         when(philosopherVoiceRepository.findById(99L)).thenReturn(Optional.empty());
 
         assertThatThrownBy(() -> philosopherVoiceService.update(99L,
-                new PhilosopherVoiceRequest("칸트", "voice-x", null, null)))
+                new PhilosopherVoiceRequest("칸트", "voice-x", null, null, null)))
                 .isInstanceOf(CustomException.class)
                 .hasFieldOrPropertyWithValue("errorCode", ErrorCode.PHILOSOPHER_VOICE_NOT_FOUND);
     }
@@ -97,12 +97,32 @@ private PhilosopherVoice entity(String name, String referenceId) {
         when(philosopherVoiceRepository.findById(1L)).thenReturn(Optional.of(found));
 
         PhilosopherVoiceResponse response = philosopherVoiceService.update(1L,
-                new PhilosopherVoiceRequest("칸트", "voice-new", "새 라벨", "메모"));
+                new PhilosopherVoiceRequest("칸트", "voice-new", "새 라벨", null, "메모"));
 
         assertThat(response.referenceId()).isEqualTo("voice-new");
         assertThat(found.getReferenceId()).isEqualTo("voice-new");
     }
 
+    @Test
+    void create_및_update가_imageKey를_저장한다() {
+        when(philosopherVoiceRepository.existsByName("루소")).thenReturn(false);
+        when(philosopherVoiceRepository.save(any(PhilosopherVoice.class)))
+                .thenAnswer(invocation -> invocation.getArgument(0));
+
+        PhilosopherVoiceResponse created = philosopherVoiceService.create(
+                new PhilosopherVoiceRequest("루소", "voice-x", "미호크 장정진",
+                        "images/philosophers/rousseau.png", null));
+        assertThat(created.imageKey()).isEqualTo("images/philosophers/rousseau.png");
+
+        PhilosopherVoice found = entity("루소", "voice-x");
+        when(philosopherVoiceRepository.findById(2L)).thenReturn(Optional.of(found));
+
+        PhilosopherVoiceResponse updated = philosopherVoiceService.update(2L,
+                new PhilosopherVoiceRequest("루소", "voice-x", null,
+                        "images/philosophers/rousseau-v2.png", null));
+        assertThat(updated.imageKey()).isEqualTo("images/philosophers/rousseau-v2.png");
+    }
+
     @Test
     void delete_대상이_없으면_예외() {
         when(philosopherVoiceRepository.existsById(99L)).thenReturn(false);