diff --git a/mappings/net/minecraft/client/render/entity/EmptyEntityRenderer.mapping b/mappings/net/minecraft/client/render/entity/EmptyEntityRenderer.mapping
new file mode 100644
index 0000000000..e316e40128
--- /dev/null
+++ b/mappings/net/minecraft/client/render/entity/EmptyEntityRenderer.mapping
@@ -0,0 +1,2 @@
+CLASS net/minecraft/class_6344 net/minecraft/client/render/entity/EmptyEntityRenderer
+	COMMENT A renderer that does not render anything. Used for markers and area effect clouds.
diff --git a/mappings/net/minecraft/datafixer/schema/Schema2707.mapping b/mappings/net/minecraft/datafixer/schema/Schema2707.mapping
new file mode 100644
index 0000000000..ac4e127f86
--- /dev/null
+++ b/mappings/net/minecraft/datafixer/schema/Schema2707.mapping
@@ -0,0 +1,7 @@
+CLASS net/minecraft/class_6332 net/minecraft/datafixer/schema/Schema2707
+	METHOD method_36248 registerEntity (Lcom/mojang/datafixers/schemas/Schema;Ljava/util/Map;Ljava/lang/String;)V
+		ARG 0 schema
+		ARG 1 entityTypes
+		ARG 2 name
+	METHOD registerEntities (Lcom/mojang/datafixers/schemas/Schema;)Ljava/util/Map;
+		ARG 1 schema
diff --git a/mappings/net/minecraft/entity/MarkerEntity.mapping b/mappings/net/minecraft/entity/MarkerEntity.mapping
new file mode 100644
index 0000000000..12b36f6342
--- /dev/null
+++ b/mappings/net/minecraft/entity/MarkerEntity.mapping
@@ -0,0 +1,4 @@
+CLASS net/minecraft/class_6335 net/minecraft/entity/MarkerEntity
+	FIELD field_33457 DATA_KEY Ljava/lang/String;
+		COMMENT The name of the compound tag that stores the marker's custom data.
+	FIELD field_33458 data Lnet/minecraft/class_2487;