diff --git a/packages/frontend/src/pages/rooms/room.core.vue b/packages/frontend/src/pages/rooms/room.core.vue
index 3243963f4f..7050d4980c 100644
--- a/packages/frontend/src/pages/rooms/room.core.vue
+++ b/packages/frontend/src/pages/rooms/room.core.vue
@@ -132,6 +132,18 @@ SPDX-License-Identifier: AGPL-3.0-only
 			</MkA>
 		</div>
 	</XOverlayPanel>
+
+	<XOverlayPanel v-if="isPlayerInfoOpen" :isNarrow="isNarrow" :title="room.name" @close="isPlayerInfoOpen = false">
+		<template #icon>
+			<i class="ti ti-user"></i>
+		</template>
+
+		<div class="_gaps_s">
+			<MkA :to="`${userPage(pointedPlayerInfo)}`" :behavior="'window'">
+				<MkUserCardMini :user="pointedPlayerInfo" :withChart="false"/>
+			</MkA>
+		</div>
+	</XOverlayPanel>
 </div>
 </template>
 
@@ -147,6 +159,7 @@ import XEnvOptions from './room.env-options.vue';
 import XOverlayPanel from './OverlayPanel.vue';
 import type { RoomControllerOptions } from '@/world/room/controller.js';
 import type { RoomState, RoomAttachments } from 'misskey-world/src/room/type.js';
+import type { PlayerProfile } from 'misskey-world-engine/src/PlayerContainer.js';
 import MkWorldMonoOptionsForm from '@/components/MkWorldMonoOptionsForm.vue';
 import { i18n } from '@/i18n.js';
 import MkButton from '@/components/MkButton.vue';
@@ -177,13 +190,14 @@ const canvas = useTemplateRef('canvas');
 
 const isMyRoom = computed(() => props.room.userId === $i?.id);
 const isNarrow = deviceKind === 'smartphone';
-
 const isModified = ref(false);
+const pointedPlayerInfo = ref<PlayerProfile | null>(null);
 
 const isMenuShowing = ref(!isNarrow);
 const isRoomSettingsOpen = ref(false);
 const isRoomInfoOpen = ref(false);
 const isFurnitureSettingsOpen = ref(false);
+const isPlayerInfoOpen = ref(false);
 
 watch(isFurnitureSettingsOpen, () => {
 	if (isFurnitureSettingsOpen.value) {
@@ -385,6 +399,11 @@ watch([graphicsQuality, fps, resolution, antialias], () => {
 	refresh();
 });
 
+controller.addListener('playerPointed', ({ playerId }) => {
+	pointedPlayerInfo.value = multiplayer.playerProfiles.value[playerId] ?? null;
+	isPlayerInfoOpen.value = true;
+});
+
 function resize() {
 	controller.resize();
 }
diff --git a/packages/frontend/src/world/engineControllerBase.ts b/packages/frontend/src/world/engineControllerBase.ts
index 32ed1e87de..631b74409d 100644
--- a/packages/frontend/src/world/engineControllerBase.ts
+++ b/packages/frontend/src/world/engineControllerBase.ts
@@ -19,9 +19,11 @@ export type EngineControllerBaseOptions = {
 
 type EngineEventsOf<T> = T extends EngineBase<infer X> ? X : EngineBaseEvents;
 
+type ControllerEvents = EventEmitter.ValidEventTypes;
+
 // UIとエンジンの間に挟まり抽象化を行うレイヤー。
 // UIからは、エンジンが直で動いててもワーカーで動いてても同じように操作できるように見える
-export abstract class EngineControllerBase<T extends EngineBase<EngineBaseEvents>> {
+export abstract class EngineControllerBase<T extends EngineBase<EngineBaseEvents>, E extends EventEmitter.ValidEventTypes = EventEmitter.ValidEventTypes> extends EventEmitter<ControllerEvents & E> {
 	private worker: Worker | null = null;
 	private engine: T | null = null;
 	private canvas: HTMLCanvasElement | null = null;
@@ -34,6 +36,7 @@ export abstract class EngineControllerBase<T extends EngineBase<EngineBaseEvents
 	private destroyed = false;
 
 	constructor(options: EngineControllerBaseOptions) {
+		super();
 		this.options = options;
 	}
 
diff --git a/packages/frontend/src/world/room/controller.ts b/packages/frontend/src/world/room/controller.ts
index 05d0237d31..d081eb6a47 100644
--- a/packages/frontend/src/world/room/controller.ts
+++ b/packages/frontend/src/world/room/controller.ts
@@ -25,7 +25,9 @@ export type RoomControllerOptions = {
 };
 
 // 抽象化レイヤー
-export class RoomController extends EngineControllerBase<RoomEngine> {
+export class RoomController extends EngineControllerBase<RoomEngine, {
+	'playerPointed': { playerId: string; };
+}> {
 	public isSitting = ref(false);
 	public isEditMode = ref(false);
 	public isRoomLightOn = ref(true);
@@ -115,6 +117,10 @@ export class RoomController extends EngineControllerBase<RoomEngine> {
 		engineEvents.on('playSfxUrl', ({ url, options }) => {
 			sound.playUrl(url, options);
 		});
+
+		engineEvents.on('playerPointed', ({ playerId }) => {
+			this.emit('playerPointed', { playerId });
+		});
 	}
 
 	public async reset(canvas: HTMLCanvasElement, attachments: RoomAttachments, roomState?: RoomState | null, options?: RoomControllerOptions | null) {
diff --git a/packages/frontend/src/world/room/multiplayer.ts b/packages/frontend/src/world/room/multiplayer.ts
index a02a98bbd9..dd94f938d8 100644
--- a/packages/frontend/src/world/room/multiplayer.ts
+++ b/packages/frontend/src/world/room/multiplayer.ts
@@ -18,7 +18,7 @@ export class Multiplayer {
 	private controller: RoomController;
 	private connection: Misskey.IChannelConnection<Misskey.Channels['worldRoom']> | null = null;
 	private roomId: string;
-	private playerProfiles: Record<string, PlayerProfile> = {};
+	public playerProfiles: Record<string, PlayerProfile> = {};
 
 	constructor(roomId: string, controller: RoomController) {
 		this.roomId = roomId;