diff --git a/include/monsters.h b/include/monsters.h
index a855fa4d9..df5851a31 100644
--- a/include/monsters.h
+++ b/include/monsters.h
@@ -2248,7 +2248,7 @@
         SIZ(WT_ELF, 350, MS_HUMANOID, MZ_HUMAN), MR_SLEEP, MR_SLEEP,
         M1_HUMANOID | M1_OMNIVORE | M1_SEE_INVIS,
         M2_NOPOLY | M2_ELF | M2_COLLECT,
-        M3_INFRAVISION | M3_INFRAVISIBLE, 2, HI_DOMESTIC, ELF),
+        M3_INFRAVISION | M3_INFRAVISIBLE, 1, HI_DOMESTIC, ELF),
     MON("Woodland-elf", S_HUMAN, LVL(4, 12, 10, 10, -5),
         (G_GENO | G_SGROUP | 2),
         A(ATTK(AT_WEAP, AD_PHYS, 2, 4), NO_ATTK,
@@ -2735,7 +2735,7 @@
         SIZ(60, 30, MS_SILENT, MZ_SMALL), 0, 0,
         M1_SWIM | M1_AMPHIBIOUS | M1_ANIMAL | M1_SLITHY | M1_NOLIMBS
             | M1_CARNIVORE | M1_OVIPAROUS | M1_NOTAKE,
-        M2_HOSTILE, 0, 6, CLR_RED, PIRANHA),
+        M2_HOSTILE, 0, 7, CLR_RED, PIRANHA),
     MON("shark", S_EEL, LVL(7, 12, 2, 0, 0), (G_GENO | G_NOGEN),
         A(ATTK(AT_BITE, AD_PHYS, 5, 6), NO_ATTK, NO_ATTK, NO_ATTK, NO_ATTK,
           NO_ATTK),
@@ -2948,7 +2948,7 @@
         M1_TUNNEL | M1_NEEDPICK | M1_HUMANOID | M1_OMNIVORE,
         M2_NOPOLY | M2_HUMAN | M2_PNAME | M2_PEACEFUL | M2_STRONG | M2_MALE
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISIBLE, 22, HI_LORD, LORD_CARNARVON),
+        M3_CLOSE | M3_INFRAVISIBLE, 24, HI_LORD, LORD_CARNARVON),
     MON("Pelias", S_HUMAN, LVL(20, 15, 0, 90, 0), (G_NOGEN | G_UNIQ),
         A(ATTK(AT_WEAP, AD_PHYS, 4, 10), ATTK(AT_WEAP, AD_PHYS, 4, 10),
           NO_ATTK, NO_ATTK, NO_ATTK, NO_ATTK),
@@ -2956,7 +2956,7 @@
         M1_HUMANOID | M1_OMNIVORE,
         M2_NOPOLY | M2_HUMAN | M2_PNAME | M2_PEACEFUL | M2_STRONG | M2_MALE
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISIBLE, 22, HI_LORD, PELIAS),
+        M3_CLOSE | M3_INFRAVISIBLE, 24, HI_LORD, PELIAS),
     MON("Shaman Karnov", S_HUMAN, LVL(20, 15, 0, 90, 20), (G_NOGEN | G_UNIQ),
         A(ATTK(AT_WEAP, AD_PHYS, 4, 10), ATTK(AT_MAGC, AD_CLRC, 2, 8),
           NO_ATTK, NO_ATTK, NO_ATTK, NO_ATTK),
@@ -2964,7 +2964,7 @@
         M1_HUMANOID | M1_OMNIVORE,
         M2_NOPOLY | M2_HUMAN | M2_PNAME | M2_PEACEFUL | M2_STRONG | M2_MALE
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISIBLE, 22, HI_LORD, SHAMAN_KARNOV),
+        M3_CLOSE | M3_INFRAVISIBLE, 24, HI_LORD, SHAMAN_KARNOV),
 #if 0 /* OBSOLETE -- leaders for 3.1.x/3.2.x elf quest when elf was a role */
     /* Two for elves - one of each sex.
      */
@@ -2996,7 +2996,7 @@
         M1_HUMANOID | M1_OMNIVORE,
         M2_NOPOLY | M2_HUMAN | M2_PNAME | M2_PEACEFUL | M2_STRONG | M2_MALE
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISIBLE, 22, HI_LORD, HIPPOCRATES),
+        M3_CLOSE | M3_INFRAVISIBLE, 26, HI_LORD, HIPPOCRATES),
     MON("King Arthur", S_HUMAN, LVL(20, 15, 0, 90, 20), (G_NOGEN | G_UNIQ),
         A(ATTK(AT_WEAP, AD_PHYS, 4, 10), ATTK(AT_WEAP, AD_PHYS, 4, 10),
           NO_ATTK, NO_ATTK, NO_ATTK, NO_ATTK),
@@ -3004,7 +3004,7 @@
         M1_HUMANOID | M1_OMNIVORE,
         M2_NOPOLY | M2_HUMAN | M2_PNAME | M2_PEACEFUL | M2_STRONG | M2_MALE
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISIBLE, 23, HI_LORD, KING_ARTHUR),
+        M3_CLOSE | M3_INFRAVISIBLE, 24, HI_LORD, KING_ARTHUR),
     MON("Grand Master", S_HUMAN, LVL(25, 15, 0, 90, 0), (G_NOGEN | G_UNIQ),
         A(ATTK(AT_CLAW, AD_PHYS, 4, 10), ATTK(AT_KICK, AD_PHYS, 2, 8),
           ATTK(AT_MAGC, AD_CLRC, 2, 8), ATTK(AT_MAGC, AD_CLRC, 2, 8), NO_ATTK,
@@ -3032,7 +3032,7 @@
         M1_HUMANOID | M1_OMNIVORE | M1_SEE_INVIS | M1_SWIM | M1_AMPHIBIOUS,
         M2_NOPOLY | M2_HUMAN | M2_PNAME | M2_PEACEFUL | M2_STRONG | M2_MALE
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISION | M3_INFRAVISIBLE, 22, HI_LORD, ORION),
+        M3_CLOSE | M3_INFRAVISION | M3_INFRAVISIBLE, 24, HI_LORD, ORION),
     /* Note: Master of Thieves is also the Tourist's nemesis.
      */
     MON("Master of Thieves", S_HUMAN, LVL(20, 15, 0, 90, -20),
@@ -3051,7 +3051,7 @@
         M1_HUMANOID | M1_OMNIVORE,
         M2_NOPOLY | M2_HUMAN | M2_PNAME | M2_PEACEFUL | M2_STRONG | M2_MALE
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISIBLE, 23, HI_LORD, LORD_SATO),
+        M3_CLOSE | M3_INFRAVISIBLE, 24, HI_LORD, LORD_SATO),
     MON("Twoflower", S_HUMAN, LVL(20, 15, 10, 90, 0), (G_NOGEN | G_UNIQ),
         A(ATTK(AT_WEAP, AD_PHYS, 4, 10), NO_ATTK, NO_ATTK,
           NO_ATTK, NO_ATTK, NO_ATTK),
@@ -3069,7 +3069,7 @@
         M1_HUMANOID | M1_OMNIVORE,
         M2_NOPOLY | M2_HUMAN | M2_PEACEFUL | M2_STRONG | M2_FEMALE
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISIBLE, 23, HI_LORD, NORN),
+        M3_CLOSE | M3_INFRAVISIBLE, 24, HI_LORD, NORN),
     MON("Neferet the Green", S_HUMAN, LVL(20, 15, 0, 90, 0),
         (G_NOGEN | G_UNIQ),
         A(ATTK(AT_WEAP, AD_PHYS, 4, 10), ATTK(AT_MAGC, AD_SPEL, 2, 8),
@@ -3078,7 +3078,7 @@
         M1_HUMANOID | M1_OMNIVORE,
         M2_NOPOLY | M2_HUMAN | M2_FEMALE | M2_PNAME | M2_PEACEFUL | M2_STRONG
             | M2_COLLECT | M2_MAGIC,
-        M3_CLOSE | M3_INFRAVISIBLE, 23, CLR_GREEN, NEFERET_THE_GREEN),
+        M3_CLOSE | M3_INFRAVISIBLE, 25, CLR_GREEN, NEFERET_THE_GREEN),
     /*
      * quest nemeses
      */