Monsters that Grow Up

All Pets and Certain Canines

• Little Dog ⇒ Dog ⇒ Large Dog
• Kitten ⇒ Housecat ⇒ Large Cat
• Pony ⇒ Horse ⇒ Warhorse
• Ram =⇒ Large Ram ⇒ Warram
• Direwolf Cub ⇒ Direwolf ⇒ Large Direwolf
• Small Luggage ⇒ Medium Luggage ⇒ Large Luggage ⇒ Giant Luggage
• Hell Hound Pup ⇒ Hell Hound
• Winter Wolf Cub ⇒ Winter Wolf

All Dragons and Dracoliches

• Dragon hatchlings grow into normal dragons, and normal dragons grow into ancient dragons
• Dracolich ⇒ Elder Dracolich

Nagas

• Red Naga Hatchling ⇒ Red Naga
• Black Naga Hatchling ⇒ Black Naga
• Golden Naga Hatchling ⇒ Golden Naga
• Guardian Naga Hatchling ⇒ Guardian Naga

Cockatrices, Liches, and Vampires

• Chickatrice ⇒ Cockatrice ⇒ Giant Cockatrice ⇒ Gargantuan Cockatrice
• Lich ⇒ Demilich ⇒ Master Lich ⇒ Arch-Lich
• Vampire ⇒ Vampire Lord ⇒ Vampire King

Mercenaries, Kops, and Watchmen

• Soldier ⇒ Sergeant ⇒ Lieutenant ⇒ Captain
• Keystone Kop ⇒ Kop Sergeant ⇒ Kop Lieutenant ⇒ Kop Kaptain
• Watchman ⇒ Watch Captain

Certain Humanoids

• Kobold ⇒ Large Kobold
• Large Kobold ⇒ Kobold Lord
• Gnome ⇒ Gnome Lord
• Gnome Lord ⇒ Gnome King
• Dwarf ⇒ Dwarf Lord
• Dwarf Lord ⇒ Dwarf King
• Gnoll ⇒ Gnoll Lord
• Gnoll Lord ⇒ Gnoll King
• Gnoll Warden ⇒ Gnoll Supreme Warden
• Flind ⇒ Flind Lord
• Tentacled One ⇒ Elder Tentacled One
• Orc ⇒ Orc-Captain
• Hill Orc ⇒ Orc-Captain
• Black Orc ⇒ Orc-Captain
• Great Orc ⇒ Orc-Captain
• Ogre ⇒ Ogre Lord
• Ogre Lord ⇒ Ogre Overlord
• Ogre Overlord ⇒ Ogre King
• Elf ⇒ Elf Lord
• Woodland Elf ⇒ Elf Lord
• Green Elf ⇒ Elf Lord
• Grey Elf ⇒ Elf Lord
• Elf Lord ⇒ Elvenking
• Quantum Mechanic ⇒ Elder Quantum Mechanic

Miscellaneous Monsters

• Sewer Rat ⇒ Giant Rat
• Cave Spider ⇒ Giant Spider
• Giant Spider ⇒ Phase Spider
• Bat ⇒ Giant Bat
• Small Mimic ⇒ Large Mimic
• Large Mimic ⇒ Giant Mimic
• Giant Mimic ⇒ Chaos Mimic
• Baby Long Worm ⇒ Long Worm
• Long Worm ⇒ Elder Long Worm
• Baby Purple Worm ⇒ Purple Worm
• Baby Crocodile ⇒ Crocodile
• Treant ⇒ Elder Treant
• Manes ⇒ Lemure

Quest Guardians

• Quest guardians can grow into the monster corresponding to the player role (e.g., Apprentice into a Wizard).

Modrons

• Modrons drones can grow up to the next level modron drone, except for Modron Pentadrone.
• Hierarch modrons can grow up to the next level hierarch modron, except for Modron Secundus and Modron Primus.