Most are based on mythological dragons, other animal with the name Dragon (ex: dragonfly, seadragon), others are legendary, Charizard is not Dragon-type but is a dragon.
Pokémon with Dragon-Type[]
Name: Dratini
Based on: Serpent Dragon
Other Type: none
Evolution: Dratini<Dragonair<Dragonite
Name: Dragonair
Based on: Serpent Dragon
Other Type: none
Evolution: Dratini<Dragonair<Dragonite
Name: Dragonite
Based on: Western Dragon
Other Type: Flying
Evolution: Dratini<Dragonair<Dragonite
Name: Vibrava
Based on: Dragonfly (actually antlion lacewings)
Other Type: Ground
Evolution: Trapinch<Vibrava<Flygon
Name: Flygon
Based on: Dragonfly (actually antlion lacewings) and Dragon
Other Type: Ground
Evolution: Trapinch<Vibrava<Flygon
Name: Kingdra
Based on: Seadragon
Other Type: Water
Evolution: Horsea<Seadra<Kingdra
Name: Altaria
Based on: Birds and clouds
Other Type: Flying
Evolution: Swablu<Altaria
Name: Bagon
Based on: Dragon
Other Type: none
Evolution: Bagon<Shelgon<Salamence
Name: Shelgon
Based on: Cocoon Dragon?
Other Type: none
Evolution: Bagon<Shelgon<Salamence
Name: Salamence
Based on: Western Dragon
Other Type: Flying
Evolution: Bagon<Shelgon<Salamence
Name: Gible
Based on: Dragon and Landshark
Other Type: Ground
Evolution: Gible<Gabite<Garchomp
Name: Gabite
Based on: Dragon and Landshark
Other Type: Ground
Evolution: Gible<Gabite<Garchomp
Name: Garchomp
Based on: Dragon and Landshark
Other Type: Ground
Evolution: Gible<Gabite<Garchomp
Name: Axew
Based on: Dragon
Other Type: none
Evolution: Axew<Fraxure<Haxorus
Name: Fraxure
Based on: Dragon
Other Type: none
Evolution: Axew<Fraxure<Haxorus
Name: Haxorus
Based on: Dragon
Other Type: none
Evolution: Axew<Fraxure<Haxorus
Name: Deino
Based on: Hydra
Other Type: Dark
Evolution: Deino<Zweilous<Hydreigon
Name: Zweilous
Based on: Hydra
Other Type: Dark
Evolution: Deino<Zweilous<Hydreigon
Name: Hydreigon
Based on: Hydra
Other Type: Dark
Evolution: Deino<Zweilous<Hydreigon
Name: Druddigon
Based on: Dragon
Other Type: none
Evolution: none
Legendary with Dragon-type[]
Name: Latios
Based on: Dragon?
Other Type: Psychic
Evolution: none
Name: Latias
Based on: Dragon?
Other Type: Psychic
Evolution: none
Name: Rayquaza
Based on: Oriental Dragon
Other Type: Flying
Evolution: none
Name: Giratina
Based on: Devil
Other Type: Ghost
Evolution: None
Name: Dialga
Based on: Sauropod
Other Type: Steel
Evolution: None
Name: Palkia
Based on: Dragon
Other Type: Water
Evolution: None
Name: Reshiram
Based on: Dragon
Other Type: Fire
Evolution: None
Name: Zekrom
Based on: Dragon
Other Type: Electric
Evolution: None
Dragon Pokémon without Dragon-type[]
Name: Charizard
Based on: Western Dragon
Type: Fire/Flying (Fire/Dragon as Mega Charizard X)
Evolution: Charmander > Charmeleon > Charizard
Name: Gyarados
Based on: Eastern Dragon/Sea Serpent
Type: Water/Flying (Water/Dark as Mega Gyarados)
Evolution: Magikarp > Gyarados