Charizard became loyal during the Orange Islands arc after Ash battled a trainer with a Poliwrath and Charizard was frozen solid.
Dragonite also had a role during the Johto Master Quest series where it was seen residing in the Holy Lands just outside Blackthorn City.
National Pokédex
Butterfree - Weedle (#13) - Kakuna (#14) - Beedrill (#15) - Pidgey
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