--- a/net/minecraft/world/level/block/entity/SkullBlockEntity.java
+++ b/net/minecraft/world/level/block/entity/SkullBlockEntity.java
@@ -41,7 +41,7 @@
     @Nullable
     private static LoadingCache<String, CompletableFuture<Optional<GameProfile>>> profileCacheByName;
     @Nullable
-    private static LoadingCache<UUID, CompletableFuture<Optional<GameProfile>>> profileCacheById;
+    private static LoadingCache<com.mojang.datafixers.util.Pair<java.util.UUID,  @org.jetbrains.annotations.Nullable GameProfile>, CompletableFuture<Optional<GameProfile>>> profileCacheById; // Paper - player profile events
     public static final Executor CHECKED_MAIN_THREAD_EXECUTOR = runnable -> {
         Executor executor = mainThreadExecutor;
         if (executor != null) {
@@ -76,9 +76,9 @@
         profileCacheById = CacheBuilder.newBuilder()
             .expireAfterAccess(Duration.ofMinutes(10L))
             .maximumSize(256L)
-            .build(new CacheLoader<UUID, CompletableFuture<Optional<GameProfile>>>() {
+            .build(new CacheLoader<>() { // Paper - player profile events
                 @Override
-                public CompletableFuture<Optional<GameProfile>> load(UUID uUID) {
+                public CompletableFuture<Optional<GameProfile>> load(com.mojang.datafixers.util.Pair<java.util.UUID, @org.jetbrains.annotations.Nullable GameProfile> uUID) { // Paper - player profile events
                     return SkullBlockEntity.fetchProfileById(uUID, apiServices, booleanSupplier);
                 }
             });
@@ -89,23 +89,29 @@
             .getAsync(name)
             .thenCompose(
                 optional -> {
-                    LoadingCache<UUID, CompletableFuture<Optional<GameProfile>>> loadingCache = profileCacheById;
+                    LoadingCache<com.mojang.datafixers.util.Pair<java.util.UUID, @org.jetbrains.annotations.Nullable GameProfile>, CompletableFuture<Optional<GameProfile>>> loadingCache = profileCacheById; // Paper - player profile events
                     return loadingCache != null && !optional.isEmpty()
-                        ? loadingCache.getUnchecked(optional.get().getId()).thenApply(optional2 -> optional2.or(() -> optional))
+                        ? loadingCache.getUnchecked(new com.mojang.datafixers.util.Pair<>(optional.get().getId(), optional.get())).thenApply(optional2 -> optional2.or(() -> optional)) // Paper - player profile events
                         : CompletableFuture.completedFuture(Optional.empty());
                 }
             );
     }
 
-    static CompletableFuture<Optional<GameProfile>> fetchProfileById(UUID uuid, Services apiServices, BooleanSupplier booleanSupplier) {
+    static CompletableFuture<Optional<GameProfile>> fetchProfileById(com.mojang.datafixers.util.Pair<java.util.UUID, @org.jetbrains.annotations.Nullable GameProfile> pair, Services apiServices, BooleanSupplier booleanSupplier) { // Paper
         return CompletableFuture.supplyAsync(() -> {
             if (booleanSupplier.getAsBoolean()) {
                 return Optional.empty();
             } else {
-                ProfileResult profileResult = apiServices.sessionService().fetchProfile(uuid, true);
+                // Paper start - fill player profile events
+                if (apiServices.sessionService() instanceof com.destroystokyo.paper.profile.PaperMinecraftSessionService paperService) {
+                    final GameProfile profile = pair.getSecond() != null ? pair.getSecond() : new com.mojang.authlib.GameProfile(pair.getFirst(), "");
+                    return Optional.ofNullable(paperService.fetchProfile(profile, true)).map(ProfileResult::profile);
+                }
+                ProfileResult profileResult = apiServices.sessionService().fetchProfile(pair.getFirst(), true);
+                // Paper end - fill player profile events
                 return Optional.ofNullable(profileResult).map(ProfileResult::profile);
             }
-        }, Util.backgroundExecutor());
+        }, Util.PROFILE_EXECUTOR); // Paper - don't submit BLOCKING PROFILE LOOKUPS to the world gen thread
     }
 
     public static void clear() {
@@ -210,9 +216,11 @@
             : CompletableFuture.completedFuture(Optional.empty());
     }
 
-    public static CompletableFuture<Optional<GameProfile>> fetchGameProfile(UUID uuid) {
-        LoadingCache<UUID, CompletableFuture<Optional<GameProfile>>> loadingCache = profileCacheById;
-        return loadingCache != null ? loadingCache.getUnchecked(uuid) : CompletableFuture.completedFuture(Optional.empty());
+    // Paper start - player profile events
+    public static CompletableFuture<Optional<GameProfile>> fetchGameProfile(UUID uuid, @Nullable String name) {
+        LoadingCache<com.mojang.datafixers.util.Pair<java.util.UUID,  @org.jetbrains.annotations.Nullable GameProfile>, CompletableFuture<Optional<GameProfile>>> loadingCache = profileCacheById;
+        return loadingCache != null ? loadingCache.getUnchecked(new com.mojang.datafixers.util.Pair<>(uuid, name != null ? new com.mojang.authlib.GameProfile(uuid, name) : null)) : CompletableFuture.completedFuture(Optional.empty());
+        // Paper end - player profile events
     }
 
     @Override
