diff --git a/data/sql/updates/pending_db_world/rev_1783886287444094700.sql b/data/sql/updates/pending_db_world/rev_1783886287444094700.sql
new file mode 100644
index 000000000..aa6f10949
--- /dev/null
+++ b/data/sql/updates/pending_db_world/rev_1783886287444094700.sql
@@ -0,0 +1,4 @@
+-- Hodir helpers (#26330): swap PACIFIED (131072) for IMMUNE_TO_NPC (512) per sniffs, so Freya's
+-- instance-wide Ground Tremor can't tag them and block her reset. SWIMMING kept where set;
+-- immunity is cleared on Hodir engage (boss_hodir.cpp).
+UPDATE `creature_template` SET `unit_flags` = (`unit_flags` & ~131072) | 512 WHERE `entry` IN (32893, 32897, 32900, 32901, 32941, 32946, 32948, 32950, 33325, 33326, 33327, 33328, 33330, 33331, 33332, 33333);
diff --git a/src/server/scripts/Northrend/Ulduar/Ulduar/boss_hodir.cpp b/src/server/scripts/Northrend/Ulduar/Ulduar/boss_hodir.cpp
index 46f9a3367..f8f406e3b 100644
--- a/src/server/scripts/Northrend/Ulduar/Ulduar/boss_hodir.cpp
+++ b/src/server/scripts/Northrend/Ulduar/Ulduar/boss_hodir.cpp
@@ -255,6 +255,12 @@ struct boss_hodir : public BossAI
         events.ScheduleEvent(EVENT_HARD_MODE_MISSED, 3min);
         Talk(TEXT_AGGRO);
 
+        // Helpers spawn IMMUNE_TO_NPC so idle bosses (e.g. Freya's Ground Tremor, #26330) can't tag
+        // them; drop it on engage. TODO: confirm timing - sniffs may clear it per-helper on unfreeze.
+        for (uint8 i = 0; i < 8; ++i)
+            if (Creature* helper = GetHelper(i))
+                helper->RemoveUnitFlag(UNIT_FLAG_IMMUNE_TO_NPC);
+
         if (instance->GetBossState(BOSS_HODIR) != DONE)
             instance->SetBossState(BOSS_HODIR, IN_PROGRESS);
     }