theSLAYER

In these games, Victreebel has a 1% appearance rate on Route 21.
In these, Victreebel is the version exclusive, paired against Vileplume.

Players may receive a Magikarp during the early game when they purchase the Magikarp from the old man in the Pokémon Center on Route 4.
Players are able to ride Gyarados to cross the seas only after learning the secret technique Sea Skim.

Players can revive a Kabuto from the Dome Fossil, when they bring the fossil to the Cinnabar Island Laboratory.
Dome Fossil is an item that is chosen from 2 fossils at Mt. Moon,
and can be acquired as a repeatable item from the sparkling spots of the 2F of Cerulean Cave.

Players can revive an Omanyte from the Helix Fossil, when they bring the fossil to the Cinnabar Island Laboratory.
Helix Fossil is an item that is chosen from 2 fossils at Mt. Moon,
and can be acquired as a repeatable item from the sparkling spots of the 2F of Cerulean Cave.

Players can revive an Aerodactyl from the Old Amber, when they bring the fossil to the Cinnabar Island Laboratory.
Old Amber is an item that is given at the back end of the Pewter City Museum,
and can be acquired as a repeatable item from the sparkling spots of the 2F of Cerulean Cave.
 

After the player defeats the Fighting Dojo Master, the player gets to choose to receive a Hitmonlee or Hitmonchan.

After the player defeats the Fighting Dojo Master, the player gets to choose to receive a Hitmonlee or Hitmonchan.

When players talk to this NPC in Vermilion City, they were asked if they prefer Growlithe or Meowth.
They were then told to catch 5 Meowth (exclusive to Let's Go Eevee).
After that, players are given an Arcanine, regardless of the choice they chose.

When players talk to this NPC in Vermilion City, they were asked if they prefer Growlithe or Meowth.
They were then told to catch 5 Growlithe (exclusive to Let's Go Pikachu).
After that, players are given a Persian, regardless of the choice they chose.

After stopping Team Rocket's takeover of Silph Co. at Saffron City,
the player may obtain a Porygon from the NPC in front of the house to the left of the Pokémon Center.

After stopping Team Rocket's takeover of Silph Co. at Saffron City,
the player may obtain a Lapras from a NPC on the 7th floor.

If the player captured at least 60 Pokémon, the player may obtain this gift,
by speaking to the NPC (the police officer) in Vermilion City, in front of the house to the right of the Pokémon Center.

If the player captured at least 50 Pokémon, the player may obtain this gift,
by speaking to the NPC standing at the North West on Route 24.

If the player captured at least 30 Pokémon, the player may obtain this gift,
by speaking to the NPC in the house that is on the left to the Pokémon Center.

Zapdos is a really rare spawn that appears flying, only after the player entered the Hall of Fame.
Players needs to encounter it in the Power Plant before it appears in the wild.

Having a combo of a 100 probably makes it easier to encounter.

Moltres is a really rare spawn that appears flying, only after the player entered the Hall of Fame.
Players needs to encounter it in the Victory Road before it appears in the wild.

Having a combo of a 100 probably makes it easier to encounter.

Articuno is a really rare spawn that appears flying, only after the player entered the Hall of Fame.
Players needs to encounter it in the Seafoam Islands before it appears in the wild.

Having a combo of a 100 probably makes it easier to encounter.

This event was given away to commemorate The Year of Legendary Pokémon via Serial code for US and EU 3DS.
The gift received between Pokémon Sun & Moon and Pokémon Ultra Sun & Ultra Moon will slightly differ, in areas such as held item, level and moveset.

This gift can only received on Pokémon Sun & Ultra Sun, while it is normally encountered at the Ultra Space Wilds of Pokémon Ultra Moon.
US and EU Serial Codes were distributed between Nov 02 to Nov 25, 2018.
The last redemption dates for these codes are Feb 28, 2019.
     Species   Lugia   Nickname   (default, save lang)   OT   Leyendas2018   TID   110218   Distribution   Serial Code   Location   a lovely place   Dates   Nov 02, 2018 
to Feb 28, 2019   PID   Cannot Be Shiny   Games   US & EU 3DS: S                                                                Lv. 60    Nature   Random   Ability   Pressure (1)   Item   None   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Skill Swap   Aeroblast   Extrasensory   Ancient Power   WC ID 656: 「¡Un Lugia impetuoso!」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic ¡Un Lugia impetuoso! El Pokémon legendario Lugia sobrevuela el
terreno de combate y aguarda tus órdenes.
¡Manda por los aires a tus adversarios con
su espectacular Aerochorro! Format Ver.1.0.6-3, Post Updated Date:20181103_1857
     Species   Lugia   Nickname   (default, save lang)   OT   Leyendas2018   TID   110218   Distribution   Serial Code   Location   a lovely place   Dates   Nov 02, 2018 
to Feb 28, 2019   PID   Cannot Be Shiny   Games   US & EU 3DS: US                                                                Lv. 100    Nature   Random   Ability   Pressure (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Aeroblast   Earth Power   Psychic   Tailwind   WC ID 656: 「¡Un Lugia impetuoso!」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic ¡Un Lugia impetuoso! El Pokémon legendario Lugia sobrevuela el
terreno de combate y aguarda tus órdenes.
¡Manda por los aires a tus adversarios con
su espectacular Aerochorro! Format Ver.1.0.6-3, Post Updated Date:20181103_1857

This event was given away to commemorate The Year of Legendary Pokémon via Serial code for US and EU 3DS.
The gift received between Pokémon Sun & Moon and Pokémon Ultra Sun & Ultra Moon will slightly differ, in areas such as held item, level and moveset.

This gift can only received on Pokémon Moon & Ultra Moon, while it is normally encountered at the Ultra Space Wilds of Pokémon Ultra Sun.
US and EU Serial Codes were distributed between Nov 02 to Nov 25, 2018.
The last redemption dates for these codes are Feb 28, 2019.
     Species   Ho-Oh   Nickname   (default, save lang)   OT   Leyendas2018   TID   110218   Distribution   Serial Code   Location   a lovely place   Dates   Nov 02, 2018 
to Feb 28, 2019   PID   Cannot Be Shiny   Games   US & EU 3DS: M                                                                Lv. 60    Nature   Random   Ability   Pressure (1)   Item   None   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Burn Up   Sacred Fire   Extrasensory   Ancient Power   WC ID 656: 「¡Un Ho-Oh ascendente!」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic ¡Un Ho-Oh ascendente! ¡El deslumbrante Pokémon legendario Ho-Oh se
alza imponente en el combate con un abanico
de poderosos movimientos, incluido su célebre
ataque Fuego Sagrado! Format Ver.1.0.6-3, Post Updated Date:20181103_1855
     Species   Ho-Oh   Nickname   (default, save lang)   OT   Leyendas2018   TID   110218   Distribution   Serial Code   Location   a lovely place   Dates   Nov 02, 2018 
to Feb 28, 2019   PID   Cannot Be Shiny   Games   US & EU 3DS: UM                                                                Lv. 100    Nature   Random   Ability   Pressure (1)   Item   Gold Bottle Cap   Bundled Item   None   Card Per Save   Only One Allowed    Moves   (ITALIC means Relearnable)   Sacred Fire   Brave Bird   Earthquake   Tailwind   WC ID 656: 「¡Un Ho-Oh ascendente!」's receiving text 0x2C Thank you for playing Pokémon! Please pick up your gift from the deliveryman in any Pokémon Center.

Classic ¡Un Ho-Oh ascendente! ¡El deslumbrante Pokémon legendario Ho-Oh se
alza imponente en el combate con un abanico
de poderosos movimientos, incluido su célebre
ataque Fuego Sagrado! Format Ver.1.0.6-3, Post Updated Date:20181103_1855

This Pokémon was encountered shiny during the playthrough.

This Pokémon was encountered shiny during the playthrough.

This Pokémon was encountered shiny during the playthrough.

This Pokémon was encountered shiny during the playthrough.

This Pokémon was encountered shiny during the playthrough.

In these, Koffing is the version exclusive, paired against Grimer.