diff --git a/data/json/monstergroups/military.json b/data/json/monstergroups/military.json
index 297d4ea187b37..459bbda296e02 100644
--- a/data/json/monstergroups/military.json
+++ b/data/json/monstergroups/military.json
@@ -65,6 +65,8 @@
       { "monster": "mon_zombie_tough", "freq": 40, "cost_multiplier": 3 },
       { "monster": "mon_zombie_rot", "freq": 20, "cost_multiplier": 2 },
       { "monster": "mon_zombie_crawler", "freq": 10, "cost_multiplier": 2 },
+      { "monster": "mon_zombie_runner", "freq": 40, "cost_multiplier": 5, "pack_size": [ 1, 4 ] },
+      { "monster": "mon_zombie_brainless", "freq": 20, "cost_multiplier": 1 },
       { "monster": "mon_zombie_cop", "freq": 20, "cost_multiplier": 2 },
       { "monster": "mon_zombie_hazmat", "freq": 10, "cost_multiplier": 2 },
       { "monster": "mon_zombie_fireman", "freq": 5, "cost_multiplier": 2 },
@@ -93,6 +95,8 @@
       { "monster": "mon_zombie_tough", "freq": 40, "cost_multiplier": 3 },
       { "monster": "mon_zombie_rot", "freq": 20, "cost_multiplier": 2 },
       { "monster": "mon_zombie_crawler", "freq": 10, "cost_multiplier": 2 },
+      { "monster": "mon_zombie_runner", "freq": 40, "cost_multiplier": 5, "pack_size": [ 1, 4 ] },
+      { "monster": "mon_zombie_brainless", "freq": 20, "cost_multiplier": 1 },
       { "monster": "mon_zombie_cop", "freq": 20, "cost_multiplier": 2 },
       { "monster": "mon_zombie_hazmat", "freq": 100, "cost_multiplier": 2 },
       { "monster": "mon_zombie_fireman", "freq": 20, "cost_multiplier": 2 },
diff --git a/data/json/monstergroups/zombies.json b/data/json/monstergroups/zombies.json
index 37bf3f3aec2c4..6726d99c11c79 100644
--- a/data/json/monstergroups/zombies.json
+++ b/data/json/monstergroups/zombies.json
@@ -53,7 +53,8 @@
     "default": "mon_zombie_scorched",
     "monsters": [
       { "monster": "mon_zombie_scorched", "freq": 100, "cost_multiplier": 1 },
-      { "monster": "mon_zombie_child_scorched", "freq": 10, "cost_multiplier": 1 }
+      { "monster": "mon_zombie_child_scorched", "freq": 10, "cost_multiplier": 1 },
+      { "monster": "mon_zombie_fiend", "freq": 5, "cost_multiplier": 5 }
     ]
   },
   {