Name changes introduced in Dragon Quest apply to the NES versions of II and III due to forming a trilogy. Most names were reverted to their original names in the GBC versions but the more recent mobile ports revert the names back to how they were in the NES version.
Dragon Quest to Dragon Warrior to Dragon Quest
Characters
- Dragon King to Dragonlord (NES) to DracoLord (GBC) to Dragonlord (mobile)
- Garai to Garin to Galen
- King Lars XVI to King Lorik
- Loto to Erdrick (NES) to Loto (GBC) to Erdrick (mobile)
- Magog to Wynn to Yukinov to Magog
- Princess Lora to Princess Gwaelin (NES) to Lady Lora (GBC) to Princess Gwaelin (mobile)
Locations
- Damdara to Hauksness to Damdara
- Dragon King's Castle to Charlock Castle to Dragonlord's Castle
- Garai to Garinham to Galenholm
- Iwayama no Doukutsunote to Rocky Cave to Craggy Cave
- Ladutorm Castle to Tantegel Castle
- Ladutorm Town to Brecconary to Tantegel Town
- Maira to Kol
- Merkid to Cantlin to Mercado to Cantlin
- Numachi no Doukutsunote to Swamp Cave to Quagmire Cave
Magic
- Begirama to Hurtmore to Firebane to Sizzle
- Behoimi to Healmore to Midheal
- Gira to Hurt to Firebal to Sizz
- Hoimi to Heal
- Mahotoun to StopSpell to Fizzle
- Rarihou to Sleep to Snooze
- Remiira to Radiant to Glow
- Riremito to Outside to Evac
- Ruler to Return to Zoom
- Toherosu to Repel to Holy Protection
Monsters
- Akuma no Kishinote to AxeKnight to MadKnight to Knight Aberrant
- Chimaera to Wyvern to Chimaera
- Daimadounote to Wizard to Druinlord to Vis Mager
- Death Dragon to Red Dragon to RedDrgn to Dread Dragon
- Dragon to Green Dragon
- Drakii to Drakee to Dracky
- Drakiima to Drakeema to Drackyma
- Droll to Drohl Drone
- Droll Mage to Drollmagi to Drohl Diabolist
- Gaikotsunote to Skeleton
- Ghost to Spooky to Ghost
- Gold Man to GoldMan to Gold Golem
- Hell Ghost to Specter to Spitegeist
- Kage no Kishinote to Demon Knight to ShdowKnight to Dark Skeleton
- Kiisu Dragon to Blue Dragon to BlueDrgn to Blue Dragon
- Killer Lycant to Werewolf to Tearwolf
- Lycant to Wolf to Bewarewolf
- Lycant Mammal to Wolflord to Scarewolf
- Mage Chimaera to Magiwyvern to Hocus Chimaera
- Mage Drakii to Magidrakee to MagDracky to Drackolyte
- Madoushinote to Warlock to Druin to Legerdeman
- Mahoutsukainote to Magician to Prestidigitator
- Meida to Druin to Eyeder to Lunatick
- Meida Lord to DruinLord to EyedrLord to Raving Lunatick
- Metal Slime to Metaly to Metal Slime
- Metro Ghost to Poltergeist to Fightgeist
- Oo Sasorinote to Scorpion
- Shi no Sasorinote to Rogue Scorpion to Death Scorpion
- Shinigami no Kishinote to ArmorKnight to AxeKnight to Knight Abhorrent
- Shiryounote to Wraith to Skeleton Scrapper
- Shiryou no Kishinote to Wraith Knight to Phantom Knight to Skeleton Soldier
- Slime Beth to Red Slime to She-Slime
- Star Chimaera to Starwyvern to Cosmic Chimaera
- Stone Man to StoneMan to RockGolem to Stone Golem
- Tetsu no Sasorinote to Metalscorpion to MtlScorpion to Iron Scorpion
- Yoroi no Kishinote to Knight to ArmKnight to Knight Errant
