diff --git a/monster/demon/Balrog.arc b/monster/demon/Balrog.arc
index 80ad23c7e..b3fa63a0e 100644
--- a/monster/demon/Balrog.arc
+++ b/monster/demon/Balrog.arc
@@ -11,6 +11,7 @@ jessyb.112
 mina
 attacktype 1029
 resist_magic 80
+resist_physical 80
 resist_godpower 80
 resist_holyword 80
 resist_fire 100
diff --git a/monster/demon/Demon_Lord/demon_lord.arc b/monster/demon/Demon_Lord/demon_lord.arc
index 499272d1d..f26acbc13 100644
--- a/monster/demon/Demon_Lord/demon_lord.arc
+++ b/monster/demon/Demon_Lord/demon_lord.arc
@@ -14,19 +14,19 @@ sp 80
 maxsp 80
 hp 3000
 maxhp 3000
-exp 90000
+exp 300000
 ac -11
 dam 40
 wc -30
 weight 8000000
 attacktype 5
+resist_physical 75
 resist_fire 100
 resist_cold 80
 resist_fear 100
 resist_holyword 90
 resist_godpower 90
 resist_magic 80
-
 level 19
 speed -0.2
 alive 1
diff --git a/monster/demon/GreatDemon/GreatDemon.arc b/monster/demon/GreatDemon/GreatDemon.arc
index aec19d3ff..0b5857133 100644
--- a/monster/demon/GreatDemon/GreatDemon.arc
+++ b/monster/demon/GreatDemon/GreatDemon.arc
@@ -20,13 +20,14 @@ sp 150
 maxsp 150
 hp 8000
 maxhp 8000
-exp 250000
+exp 550000
 ac -11
 dam 80
 wc -50
 weight 8000000
 attacktype 1029
 attack_movement 5
+resist_physical 90
 resist_fire 100
 resist_confusion 100
 resist_poison 100