Honorary dragons, pseudo dragons or dragonbros.

Those pokemon that are not Dragon type but they draconic enough than you can stretch the definition of dragon for them or find a reason why they shold be treated as dragons).

Who is your favorite Honorary Dragon?

Charizard
Onix
Ekans
Arbok
Kangaskhan
Horsea and Kingdra
Gyarados
Lapras
Aerodactyl
Meganium
Feraligatr
Ampharos
Yanma
Durnspance
Steelix
Tyranintar
Sceptile
Aggron
Torkoal? (I'm on the fence about this one)
Whiscash
Milotic
Tropius
Huntail
Gorebyss
Rampardos
Bastidon
Drapion
Yanmega
Serperior
Gigalith
Krokodile
Scrafty
Archeops
Eelecktross
Heliolisk
Salazzle
Intelion
Coalossal
Sandaconda
Toxtricity
Arctozolt