Quoted By:
Which of these very hard-to-encounter Pokémon in their respective games did you NOT bump into by sheer coincidence prior to knowing about their hideouts by using external third-party guides like Bulbapedia or booklets? I only include Gens 1 to 3 as external guides have pretty much been mainstream ever since Gen 4 came out.
>Electabuzz in Red
>Tauros in Red/Blue
>Kangaskhan in Red/Blue
>Dragonair in Yellow
>Dratini in RBY
>Poliwag in RBY
>Goldeen in RBY
>Shellder in RBY
>Staryu in RBY
>Scyther/Pinsir in RBY
>Wobbuffet in Gold/Silver
>Remoraid in Gold/Silver
>Skarmory in Crystal
>Extremespeed Dratini in Crystal
>Ho-Oh in Crystal
>Lugia in Crystal
>Gift Tyrogue in GSC
>Scyther in GSC
>Pinsir in GSC
>Dunsparce in GSC
>Smeargle in GSC
>Chansey in GSC
>Yanma in GSC
>Qwilfish in GSC
>Misdreavus in GSC
>Chinchou in GSC
>Lanturn in GSC
>Shellder in GSC
>Corsola in GSC
>Staryu in GSC
>Heracross in GSC
>Exeggcute in GSC
>Aipom in GSC
>Pineco in GSC
>Tauros in GSC
>Unown in GSC
>Slugma in GSC
>Rayquaza in Ruby/Sapphire
>Volbeat in Ruby/Emerald
>Grimer in Ruby/Emerald
>Illumise in Sapphire
>Mirage Island Wynaut in RSE
>Feebas in RSE
>Milotic in RSE
>Chimecho in RSE
>Relicanth in RSE
>Nosepass in RSE
>Shedinja in RSE
>Heracross in RSE
>Snorunt in RSE
>Jigglypuff in RSE
>Bagon in RSE
>Latias/Latios in RSE
Groudon in Emerald
Kyogre in Emerald
Rare Johtomons in the postgame Safari Zone extension in Emerald
>Murkrow/Misdreavus in FR/LG
>Delibird/Sneasel in FR/LG
>Qwilfish/Remoraid in FR/LG
>Larvitar in FRLG
>Raikou/Entei/Suicune in FRLG
>Mantine in LG