I noticed the list for "Other Codes\In-Battle Codes\Enemies Modifier" was small so I decided to mess about with the codelist.inf and this is what I have found:

$00 Berserk Mouse
$01 Assassin Cock
$02 Trent
$03 Goblin
$04 Goblin + Assassin Cock
$05 Trent + Asssassin Cock
$06 Berserk Mouse + Assassin Cock
$07 Assassin Cock + Assassin Cock
$08 Berserk Mouse + Berserk Mouse
$09 Goblin  + Trent
$0A Vampire Kiwi
$0B Mole
$0C Cresent Bee
$0D Mantis
$0E Vampire Kiwi + Vampire Kiwi
$0F Vampire Kiwi + Cresent Bee
$10 Mantis + Cresent Bee
$11 Mole + Mole
$12 Vampire Kiwi + Mole + Vampire Kiwi
$13 Mantis + Vampire Kiwi
$14 Screaming Bat + Screaming Bat
$15 Slime
$16 Ulgy Balloon
$17 Orc
$18 Evil Spider
$19 Screaming Bat + Ulgy Balloon
$1A Screaming Bat + Orc + Screaming Bat
$1B Slime + Ulgy Balloon
$1C Slime + Slime
$1D Orc + Ulgy Balloon + Orc
$1E Sea Dragon
$1F Crocodile
$20 Myconido
$21 Merman
$22 Myconido + Myconido
$23 Sea Dragon + Myconido
$24 Sea Dragon + Sea Dragon
$25 Myconido + Sea Dragon + Myconido
$26 Crocodile + Crocodile
$27 Sea Dragon + Crocodile + Sea Dragon
$28 Magma Fish
$29 Red Hot
$2A Salamander
$2B Fire Spirit
$2C Magma Fish + Magma Fish
$2D Red Hot + Salamander
$2E Salamander + Salamander
$2F Fire Spirit + Fire Spirit
$30 Fire Spirit + Salamander
$31 Red Hot + Red Hot
$32 Mandrake
$33 Run Fast
$34 Lizard Man
$35 Man Eating Bud
$36 Tricky Bat + Tricky Bat
$37 Mandrake + Run Fast
$38 Mandrake + Lizard Man
$39 Tricky Bat + Mandrake + Tricky Bat
$3A Run Fast + Lizard Man + Run Fast
$3B Lizard Man + Lizard Man
$3C Crystal Golem
$3D Plague Rat + Plague Rat
$3E Strong Man
$3F Gargoyle
$40 Living Statue
$41 Strong Man + Gargoyle
$42 Gargoyle + Gargoyle
$43 Plague Rat + Strong Man + Plague Rat
$44 Gargoyle + Living Statue + Gargoyle
$45 Living Statue + Strong Man + Living Statue
$46 Cursed Jar (Special)
$47 Treasure Jar (Special)
$48 Lucky Jar (Special)
$49 00PARTS (Special)
$4A Scissorhands
$4B Rainbow Bird (Special)
$4C Blue Bird (Special)
$4D Red Bird (Special)
$4E Yellow Bird (Special)
$4F Scissorhands
$50 Frilled Lizard
$51 Scissorhands
$52 Arrow Shooter
$53 Stinger
$54 Earth Shaker
$55 Frilled Lizard + Stinger
$56 Frilled Lizard + Arrow Shooter
$57 Scissorhands + Frilled Lizard + Scissorhands
$58 Stinger + Frilled Lizard + Stinger
$59 Earth Shaker + Earth Shaker
$5A Erupting Chick
$5B Roc
$5C Dragonfly
$5D Spider Urchin
$5E Killer Bird
$5F Killer Bird + Erupting Chick + Killer Bird
$60 Spider Urchin + Roc
$61 Erupting Chick + Spider Urchin + Erupting Chick
$62 Roc + Roc
$63 Killer Bird + Spider Urchin + Killer Bird
$64 Crafty Thief
$65 Gangster
$66 Berserker
$67 Piggy
$68 Piggy + Piggy
$69 Berserker + Piggy
$6A Crafty Thief + Berserker
$6B Berserker + Piggy + Berserker
$6C Crafty Thief + Crafty Thief + Crafty Thief
$6D Piggy + Gangster + Piggy
$78 Glare
$79 Screw Shell
$7A Mermaid
$7B Sea Piranha
$7C Flabby Troll
$7D Screw Shell + Mermaid + Screw Shell
$7E Sea Piranha + Sea Piranha + Sea Piranha
$7F Sea Piranha + Mermaid + Sea Piranha
$80 Mermaid + Flabby Troll
$81 Screw Shell + Glare + Screw Shell
$82 Flying Rat
$83 Forest Runner
$84 Wounded Bear
$85 Dark Elf
$86 Moss Dresser
$87 Moss Dresser + Moss Dresser
$88 Forest Runner + Flying Rat
$89 Dark Elf + Forest Runner
$8A Flying Rat + Dark Elf + Flying Rat
$8B Forest Runner + Moss Dresser + Forest Runner
$8C Puck
$8D Fairy
$8E Gnome
$8F Spinninghead
$90 Toad Stool
$91 Toad Stool + Puck
$92 Toad Stool + Gnome + Toad Stool
$93 Gnome + Gnome
$94 Puck + Spinninghead + Puck
$95 Fairy + Puck + Fairy
$96 Baby Dragon
$97 Beastie Dragon
$98 Mega Sea Dragon
$99 Deadly Spider
$9A Wyvern
$9B Mega Sea Dragon + Deadly Spider
$9C Beastie Dragon + Beastie Dragon
$9D Deadly Spider + Beastie Dragon
$9E Mega Sea Dragon + Deadly Spider + Mega Sea Dragon
$9F Baby Dragon + Baby Dragon + Baby Dragon
$A0 Freeze Knight
$A1 Mammoth
$A2 Icicle Ball
$A3 Land Skater
$A4 Rocky Turtle
$A5 Freeze Knight + Icicle Ball
$A6 Land Skater + Rocky Turtle
$A7 Rocky Turtle + Rocky Turtle
$A8 Freeze Knight + Land Skater + Freeze Knight
$A9 Land Skater + Icicle Ball Land Skater
$AA Metal Fang
$AB Dragon Soldier
$AC Basilisk
$AD Madman
$AE Metal Fang + Madman
$AF Madman + Basilisk
$B0 Dragon Soldier + Dragon Soldier
$B1 Dragon Soldier + Metal Fang + Dragon Soldier
$B2 Basilisk + Basilisk
$B3 Madman + Madman
$B4 Wildman
$B5 Bowling
$B6 Windy Weasel
$B7 White Ape
$B8 Mr. Bone
$B9 Windy Weasel + Bowling
$BA Wildman + Bowling
$BB White Ape + Bowling + White Ape
$BC Windy Weasel + Mr. Bone + Windy Weasel
$BD Mr. Bone + Mr. Bone + Mr. Bone
$BE Spring Hitter
$BF Succubus
$C0 Maximum Volt
$C1 Witch
$C2 Terminator
$C3 Spring Hitter + Succubus
$C4 Succubus + Spring Hitter
$C5 Terminator + Witch + Terminator
$C6 Maximum Volt + Maximum Volt
$C7 Spring Hitter + Terminator + Spring Hitter
$C8 Rocky Turtle
$C9 Basilisk
$CA Unicorn
$CB Mr. Bone
$CC Trap Plant
$CD Basilisk + Rocky Turtle
$CE Rocky Turtle + Rocky Turtle
$CF Mr. Bone + Basilisk
$D0 Basilisk + Unicorn + Rocky Turtle
$D1 Mr. Bone + Mr. Bone + Mr. Bone
$E6 Scud Shark
$E7 Jelly
$E8 Stern Fish
$E9 Minotaur
$EA Aqua King
$EB Jelly + Scud Shark
$EC Aqua King + Minotaur
$ED Jelly + Jelly
$EE Scud Shark + Aqua King
$EF Jelly + Minotaur
$F0 Professor
$F1 Guillotine
$F2 Harpy
$F3 Sky Chaser
$F4 Death Purger
$F5 Guillotine + Harpy
$F6 Death Purger + Guillotine
$F7 Professor + Sky Chaser + Professor
$F8 Harpy + Harpy
$F9 Death Purger + Professor  + Death Purger
$FA Undead
$FB Loner Knight
$FC Hyper Skeleton
$FD Specter
$FE Terminator
$FF Undead + Specter
$100 Loner Knight + Terminator
$101 Specter + Specter
$102 Loner Knight + Hyper Skeleton + Loner Knight
$103 Undead + Undead + Undead
$104 Potbelly
$105 Slug
$106 Cute Cat
$107 Manticore
$108 Moutain Ape
$109 Slug + Slug
$10A Manticore + Cute Cat
$10B Potbelly + Slug + Potbelly
$10C Manticore + Manticore
$10D Moutain Ape + Cute Cat + Moutain Ape
$10E Unicorn
$10F Mad Skull
$110 Swift Dragon
$111 Trap Plant
$112 Unicorn + Mad Skull
$113 Unicorn + Unicorn
$114 Mad Skull + Mad Skull
$115 Swift Dragon + Trap Plant
$116 Unicorn + Mad Skull + Unicorn
$117 Swift Dragon + Swift Dragon + Swift Dragon
$118 Psyche Druid
$119 Triceratops
$11A Roulette Face
$11B Air Combat
$11C Psyche Druid + Psyche Druid
$11D Psyche Druid + Roulette Face
$11E Roulette Face + Roulette Face
$11F Roulette Face + Roulette Face + Roulette Face
$120 Air Combat + Air Combat
$121 Psyche Druid + Psyche Druid + Psyche Druid
$122 Swift Dragon
$123 Rainbow Bird (Special)
$124 Lucky Jar (Special)
$125 Unicorn
$126 Unicorn + Swift Dragon
$127 Roulette Face
$128 Mad Skull
$129 Psyche Druid
$12A 00PARTS (Special)
$12B Psyche Druid + Mad Skull
$12C Trap Plant
$12D Unicorn
$12E Swift Dragon
$12F Unicorn + Swift Dragon
$130 Unicorn + Unicorn
$131 Psyche Druid
$132 Mad Skull
$133 Trap Plant
$134 Psyche Druid + Psyche Druid
$135 Psyche Druid + Mad Skull
$136 Swift Dragon
$137 Air Combat
$138 Triceratops
$139 Swift Dragon + Swift Dragon + Swift Dragon
$13A Air Combat + Swift Dragon
$13B Psyche Druid
$13C Roulette Face
$13D Unicorn
$13E Roulette Face + Unicorn
$13F Psyche Druid + Unicorn
$180 Commander + 2x Knight of Sandora (Boss)
$181 Sandora Elite (Boss)
$182 Fruegel (Boss)
$183 Fruegel + Rodriguez + Guftas (Boss)
$184 Kongol (Boss) (Hoax)
$185 Kongol (Boss) (Black Castle)
$186 Doel (Boss)
$187 Lloyd (Tournament)
$188 Lloyd (Boss) (Flanvel Tower)
$189 Feyrbrand + Greham (Boss)
$18A Divine Dragon (Boss)
$18B Shirley (Boss)
$18C Lenus (Boss)
$18D Regole + Lenus (Boss)
$18E Damia (Optional Boss)
$18F Syuveil (Optional Boss)
$190 Belzac (Optional Boss)
$191 Kanzas (Optional Boss)
$192 Mappi + 2x Crafy Thiefs (Boss)
$193 Gehrich + Mappi (Boss)
$194 Gorgaga (Tournament)
$195 Serfius (Tournament)
$196 Danton (Tournament)
$197 Atlow (Tournament)
$198 Virage (Boss) (Volcano Villude)
$199 Virage (Boss) (Corrupted Gravity Valley)
$19A S Virage (Boss) (Kadesssa)
$19B S Virage (Boss) (Moon)
$19C Drake the Bandit (Boss)
$19D Jiango (Boss)
$19E Urobolus (Boss)
$19F Fire Bird (Boss)
$1A0 Grand Jewel (Boss)
$1A1 Ghost Commander + 4x Ghost Knights (Boss)
$1A2 Kamuy (Optional Boss)
$1A4 Magician Faust (Optional Super Boss)
$1A5 Fake Magician Faust (Optional Super Boss)
$1A6 Windigo (Boss)
$1A7 Polter Armour (Optional Boss)
$1A8 Melbu Frama (Boss) (Lloyd)
$1AE Kubila + Vector + Selebus (Boss)
$1AF Lavit's Spirit (Boss)
$1B0 Last Kraken (Boss)
$1B1 Caterpillar (Boss)
$1B2 Death Rose (Boss)
$1B3 Claire (Boss)
$1B4 Indora (Boss)
$1B5 Micheal (Boss)
$1B6 Shadow Blade + Light Sword (Boss)
$1B7 Archangel (Boss)
$1BA Zieg Feld (Boss)
$1BB Melbu Frama (Boss) (1st Form)
$1BC Melbu Frama (Boss) (2rd Form)
$1BD Melbu Frama (Boss) (3rd Form) + 4x Bomb Stars
$1BE Melbu Frama (Boss) (4th Form) + 2x Monsters
$1BF Dragon Spirit (Boss) (Divine)
$1C0 Dragon Spirit (Boss) (Regole)
$1C1 Dragon Spirit (Boss) (Feyrbrand)
$1C2 Master Tasman (Combat Tutorial)
$1C3 Merchant (Attack Item Tutorial)
$1C4 Rose (Dragoon Tutorial)
$1C5 Will-o'-Wisp + Death + Will-o'-Wisp
$1C6 Will-o'-Wisp + Skeleton + Will-o'-Wisp
$1C7 Spinninghead
$1C8 Cactus + Cactus
$1C9 Spiky Beetle + Sandworm
$1CA Canbria Dayfly + Scorpion
$1CB Sandworm
$1CC Canbria Dayfly
$1CD Sandora Elite (Black Castle)
$1CE Virage (Weak, no Gold or EXP)
$1E6 Hellena Warden + Hellena Warden
$1E7 Sandora Soldier + Commander + Sandora (Marshlands)
$1E8 Skeleton + Magician Bogy + Skeleton
$1E9 Magician Bogy + Magician Bogy + Magician Bogy