diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoOverlay.java b/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoOverlay.java
index 5dac2b59b3..8b67fc28ce 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoOverlay.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoOverlay.java
@@ -38,6 +38,7 @@ import net.runelite.api.Client;
 import net.runelite.api.NPC;
 import net.runelite.api.Player;
 import net.runelite.api.Varbits;
+import net.runelite.client.game.HiscoreManager;
 import net.runelite.client.ui.overlay.Overlay;
 import net.runelite.client.ui.overlay.OverlayPosition;
 import net.runelite.client.ui.overlay.OverlayPriority;
@@ -45,6 +46,7 @@ import net.runelite.client.ui.overlay.components.PanelComponent;
 import net.runelite.client.ui.overlay.components.ProgressBarComponent;
 import net.runelite.client.ui.overlay.components.TitleComponent;
 import net.runelite.client.util.Text;
+import net.runelite.http.api.hiscore.HiscoreResult;
 
 class OpponentInfoOverlay extends Overlay
 {
@@ -53,6 +55,9 @@ class OpponentInfoOverlay extends Overlay
 	private static final Duration WAIT = Duration.ofSeconds(3);
 
 	private final Client client;
+	private final OpponentInfoPlugin opponentInfoPlugin;
+	private final HiscoreManager hiscoreManager;
+
 	private final NPC[] clientNpcs;
 	private final PanelComponent panelComponent = new PanelComponent();
 	private final Map<String, Integer> oppInfoHealth = OpponentInfoPlugin.loadNpcHealth();
@@ -65,9 +70,12 @@ class OpponentInfoOverlay extends Overlay
 	private NPC lastOpponent;
 
 	@Inject
-	private OpponentInfoOverlay(Client client)
+	private OpponentInfoOverlay(Client client, OpponentInfoPlugin opponentInfoPlugin, HiscoreManager hiscoreManager)
 	{
 		this.client = client;
+		this.opponentInfoPlugin = opponentInfoPlugin;
+		this.hiscoreManager = hiscoreManager;
+
 		this.clientNpcs = client.getCachedNPCs();
 		setPosition(OverlayPosition.TOP_LEFT);
 		setPriority(OverlayPriority.HIGH);
@@ -116,7 +124,24 @@ class OpponentInfoOverlay extends Overlay
 			lastTime = Instant.now();
 			lastRatio = (float) opponent.getHealthRatio() / (float) opponent.getHealth();
 			opponentName = Text.removeTags(opponent.getName());
-			lastMaxHealth = oppInfoHealth.get(opponentName + "_" + opponent.getCombatLevel());
+
+			lastMaxHealth = null;
+			if (opponent instanceof NPC)
+			{
+				lastMaxHealth = oppInfoHealth.get(opponentName + "_" + opponent.getCombatLevel());
+			}
+			else if (opponent instanceof Player)
+			{
+				HiscoreResult hiscoreResult = hiscoreManager.lookupAsync(opponentName, opponentInfoPlugin.getHiscoreEndpoint());
+				if (hiscoreResult != null)
+				{
+					int hp = hiscoreResult.getHitpoints().getLevel();
+					if (hp > 0)
+					{
+						lastMaxHealth = hp;
+					}
+				}
+			}
 
 			Actor opponentsOpponent = opponent.getInteracting();
 			if (opponentsOpponent != null
diff --git a/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoPlugin.java b/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoPlugin.java
index a92d272edb..9d3bd49f24 100644
--- a/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoPlugin.java
+++ b/runelite-client/src/main/java/net/runelite/client/plugins/opponentinfo/OpponentInfoPlugin.java
@@ -24,31 +24,69 @@
  */
 package net.runelite.client.plugins.opponentinfo;
 
+import com.google.common.eventbus.Subscribe;
 import com.google.common.reflect.TypeToken;
 import com.google.gson.Gson;
 import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.lang.reflect.Type;
+import java.util.EnumSet;
 import java.util.Map;
 import javax.inject.Inject;
+import lombok.AccessLevel;
+import lombok.Getter;
+import net.runelite.api.Client;
+import net.runelite.api.GameState;
+import net.runelite.api.WorldType;
+import net.runelite.api.events.GameStateChanged;
 import net.runelite.client.plugins.Plugin;
 import net.runelite.client.plugins.PluginDescriptor;
 import net.runelite.client.ui.overlay.Overlay;
+import net.runelite.http.api.hiscore.HiscoreEndpoint;
 
 @PluginDescriptor(
 	name = "Opponent Information"
 )
 public class OpponentInfoPlugin extends Plugin
 {
+	@Inject
+	private Client client;
+
 	@Inject
 	private OpponentInfoOverlay overlay;
 
+	@Getter(AccessLevel.PACKAGE)
+	private HiscoreEndpoint hiscoreEndpoint = HiscoreEndpoint.NORMAL;
+
 	@Override
 	public Overlay getOverlay()
 	{
 		return overlay;
 	}
 
+	@Subscribe
+	public void onGameStateChanged(GameStateChanged gameStateChanged)
+	{
+		if (gameStateChanged.getGameState() != GameState.LOGGED_IN)
+		{
+			return;
+		}
+
+		EnumSet<WorldType> worldType = client.getWorldType();
+		if (worldType.contains(WorldType.DEADMAN))
+		{
+			hiscoreEndpoint = HiscoreEndpoint.DEADMAN;
+		}
+		else if (worldType.contains(WorldType.SEASONAL_DEADMAN))
+		{
+			hiscoreEndpoint = HiscoreEndpoint.SEASONAL_DEADMAN;
+		}
+		else
+		{
+			hiscoreEndpoint = HiscoreEndpoint.NORMAL;
+		}
+	}
+
 	public static Map<String, Integer> loadNpcHealth()
 	{
 		Gson gson = new Gson();