diff --git a/osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlay.cs b/osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlay.cs
index 5d13421195..a27c4ddad2 100644
--- a/osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlay.cs
+++ b/osu.Game.Tests/Visual/Online/TestSceneBeatmapSetOverlay.cs
@@ -14,6 +14,7 @@ using System.Collections.Generic;
 using System.Linq;
 using osu.Framework.Testing;
 using osu.Game.Beatmaps.Drawables;
+using osu.Game.Graphics.Sprites;
 using osu.Game.Online.API;
 using osu.Game.Online.API.Requests;
 using osu.Game.Online.API.Requests.Responses;
@@ -26,7 +27,7 @@ using APIUser = osu.Game.Online.API.Requests.Responses.APIUser;
 
 namespace osu.Game.Tests.Visual.Online
 {
-    public partial class TestSceneBeatmapSetOverlay : OsuTestScene
+    public partial class TestSceneBeatmapSetOverlay : OsuManualInputManagerTestScene
     {
         private readonly TestBeatmapSetOverlay overlay;
 
@@ -281,6 +282,22 @@ namespace osu.Game.Tests.Visual.Online
             AddAssert(@"type is correct", () => type == lookupType.ToString());
         }
 
+        [Test]
+        public void TestBeatmapSetWithGuestDifficulty()
+        {
+            AddStep("show map", () => overlay.ShowBeatmapSet(createBeatmapSetWithGuestDifficulty()));
+            AddStep("move mouse to host difficulty", () =>
+            {
+                InputManager.MoveMouseTo(overlay.ChildrenOfType<DifficultyIcon>().ElementAt(0));
+            });
+            AddAssert("guest mapper information not shown", () => overlay.ChildrenOfType<BeatmapPicker>().Single().ChildrenOfType<OsuSpriteText>().All(s => s.Text != "BanchoBot"));
+            AddStep("move mouse to guest difficulty", () =>
+            {
+                InputManager.MoveMouseTo(overlay.ChildrenOfType<DifficultyIcon>().ElementAt(1));
+            });
+            AddAssert("guest mapper information shown", () => overlay.ChildrenOfType<BeatmapPicker>().Single().ChildrenOfType<OsuSpriteText>().Any(s => s.Text == "BanchoBot"));
+        }
+
         private APIBeatmapSet createManyDifficultiesBeatmapSet()
         {
             var set = getBeatmapSet();
@@ -320,6 +337,60 @@ namespace osu.Game.Tests.Visual.Online
             return beatmapSet;
         }
 
+        private APIBeatmapSet createBeatmapSetWithGuestDifficulty()
+        {
+            var set = getBeatmapSet();
+
+            var beatmaps = new List<APIBeatmap>();
+
+            var guestUser = new APIUser
+            {
+                Username = @"BanchoBot",
+                Id = 3,
+            };
+
+            set.RelatedUsers = new[]
+            {
+                set.Author, guestUser
+            };
+
+            beatmaps.Add(new APIBeatmap
+            {
+                OnlineID = 1145,
+                DifficultyName = "Host Diff",
+                RulesetID = Ruleset.Value.OnlineID,
+                StarRating = 1.4,
+                OverallDifficulty = 3.5f,
+                AuthorID = set.AuthorID,
+                FailTimes = new APIFailTimes
+                {
+                    Fails = Enumerable.Range(1, 100).Select(j => j % 12 - 6).ToArray(),
+                    Retries = Enumerable.Range(-2, 100).Select(j => j % 12 - 6).ToArray(),
+                },
+                Status = BeatmapOnlineStatus.Graveyard
+            });
+
+            beatmaps.Add(new APIBeatmap
+            {
+                OnlineID = 1919,
+                DifficultyName = "Guest Diff",
+                RulesetID = Ruleset.Value.OnlineID,
+                StarRating = 8.1,
+                OverallDifficulty = 3.5f,
+                AuthorID = 3,
+                FailTimes = new APIFailTimes
+                {
+                    Fails = Enumerable.Range(1, 100).Select(j => j % 12 - 6).ToArray(),
+                    Retries = Enumerable.Range(-2, 100).Select(j => j % 12 - 6).ToArray(),
+                },
+                Status = BeatmapOnlineStatus.Graveyard
+            });
+
+            set.Beatmaps = beatmaps.ToArray();
+
+            return set;
+        }
+
         private void downloadAssert(bool shown)
         {
             AddAssert($"is download button {(shown ? "shown" : "hidden")}", () => overlay.Header.HeaderContent.DownloadButtonsVisible == shown);
diff --git a/osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs b/osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs
index 585e0dd1a2..104f861df7 100644
--- a/osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs
+++ b/osu.Game/Overlays/BeatmapSet/BeatmapPicker.cs
@@ -31,6 +31,7 @@ namespace osu.Game.Overlays.BeatmapSet
         private const float tile_spacing = 2;
 
         private readonly OsuSpriteText version, starRating, starRatingText;
+        private readonly LinkFlowContainer guestMapperContainer;
         private readonly FillFlowContainer starRatingContainer;
         private readonly Statistic plays, favourites;
 
@@ -88,6 +89,14 @@ namespace osu.Game.Overlays.BeatmapSet
                                     Origin = Anchor.BottomLeft,
                                     Font = OsuFont.GetFont(size: 17, weight: FontWeight.Bold)
                                 },
+                                guestMapperContainer = new LinkFlowContainer(s =>
+                                    s.Font = OsuFont.GetFont(weight: FontWeight.Bold, size: 11))
+                                {
+                                    AutoSizeAxes = Axes.Both,
+                                    Anchor = Anchor.BottomLeft,
+                                    Origin = Anchor.BottomLeft,
+                                    Margin = new MarginPadding { Bottom = 1 },
+                                },
                                 starRatingContainer = new FillFlowContainer
                                 {
                                     Anchor = Anchor.BottomLeft,
@@ -198,8 +207,21 @@ namespace osu.Game.Overlays.BeatmapSet
             updateDifficultyButtons();
         }
 
-        private void showBeatmap(IBeatmapInfo? beatmapInfo)
+        private void showBeatmap(APIBeatmap? beatmapInfo)
         {
+            guestMapperContainer.Clear();
+
+            if (beatmapInfo?.AuthorID != BeatmapSet?.AuthorID)
+            {
+                APIUser? user = BeatmapSet?.RelatedUsers?.SingleOrDefault(u => u.OnlineID == beatmapInfo?.AuthorID);
+
+                if (user != null)
+                {
+                    guestMapperContainer.AddText("mapped by ");
+                    guestMapperContainer.AddUserLink(user);
+                }
+            }
+
             version.Text = beatmapInfo?.DifficultyName ?? string.Empty;
         }