Poliwrath (Gen I) Whirlpool, before it was a games move in Gen II.
Pidgeot (Gen I) Hurricane LONG before it was a games move in Gen V.
Magikarp (Gen I) Flail, before it was a games move in Gen II.
Kingler (Gen I)Porygon (Gen I) Conversion 2, before it was a games move in Gen II.
Diglett (Gen I) Mud Slap, before it was a games move in Gen II.
Gastly (Gen I) Destiny Bond, before it was a games move in Gen II.
Venomoth (Gen I) Shift's Japanese name is the same as Color Change, Kecleon's ability in Gen III.
Kabuto Kabuto Armor's Japanese name is the same as Battle Armor; a Gen III ability shared by several fossils including Kabuto.
Brock's Ninetales Shapeshift's name is different but general spirit and effects are similar to Illusion; the other Kitsune based pokemon's ability.
Pikachu (Gen I) Spark, before it was a games move in Gen II.
Aerodactyl (Gen I) Prehistoric Power's Japanese name, Primal Power is the same as AncientPower, before it was a games move in Gen II.
Gengar (Gen I) Curse, before it was a games move in Gen II.
Haunter (Gen I) Nightmare, before it was a games move in Gen II.
Hypno (Gen I) Prophecy's Japanese name is Future Sight, a Gen II move.
Togepi's Gen II Card Poison Barb's Japanese name, Poison Spine, is same as Poison Point; which would be an ability in Gen III that Togepi couldn't have.
Seadra's Gen II Card Mud Splash's Japanese name, Muddy River, is same as Muddy Water; which would be a move in Gen III that Seadra can have by breeding.
Natu's Gen II Card Telekinesis would later be a move in Gen V, which Natu can get through TM.
Will's Slowking (Gen II) Xatu (Gen III) Natu (Gen III)Mareep's Gen II Card Static Electricity's Japanese name, Static Electricity, is same as Static; which would be an ability in Gen III that Mareep has.
Yanma's Gen II Card Though it's typing and effects are different than the games move Shockwave has about the same name as the Gen IV move Shock Wave.
Dark Magcargo (Gen II) Ball of Flame's Japanese name, Flame Bomb, is same as Searing Shot; which would become a move in Gen V that Magcargo cannot learn.
Red Gyarados (Gen II) Devastate's Japanese name, Complete Burn, is the same as Incinerate; which would become a move in Gen V that Gyarados may learn via TM.
Remoraid (Gen II) Sharpshooting's Japanese name, Snipe, seems to be directly related to Remoraid's later ability Sniper.
Lanturn (Gen II) had the ability to switch in between pure Electric and pure Water through "Submerge" effects similar to Soak.
Stantler (Gen II) Terrorize's Japanese Name, Intimidation, is the same as Stantler's ability in Gen III, Intimidate.
Raichu (Gen II) Lightning Strike's Japanese name, Lightning Strike, is the same as Bolt Strike, a Gen V move Raichu cannot learn.
Ampharos (Gen II) Same Move.
Jolteon (Gen III) Lanturn (Gen III) Rocket's Zapdos (Gen III) English is different, but Japanese is the same.
Suicune (Gen II) Crystal Body has a similar name and works the same as Clear Body, a Gen III ability; that Suicune cannot have.
Dark Wigglytuff (Gen II) Slap Awake is mechanically the same and similarly named to Wake-Up Slap, a Gen IV move Wigglytuff can learn.
Light Slowbro (Gen II) Splash Around's Japanese name, Play in Water, is the same as Water Sport, a move introduced in Gen III, that Slowbro cannot learn.
Light Venomoth (Gen II) Synchronize has the same name as the ability and a similar name AND effect to Synchronoise.
Alakazam (Gen II) Synchro-Blast is a stronger move with same effect.
Girafarig (Gen II)Shiny Celebi (Gen II) Miracle Leaf is nearly identical in name to Magical Leaf, which became a move in Gen III.
Mewtwo (Gen I) Second attack is Telekinesis, which wouldn't be an official move until Gen V, when Mewtwo could learn it via TM.
Arbok (Gen II) Poison Reaction's effect is the same as Venoshock which would become a move in Gen V, which Arbok can learn by TM.
Aqua's Crawdaunt Same move
Dragonite (Gen II) Tailwind becomes a moves in Gen IV; Dragon Tail in Gen V, Dragonite can both.
Crystal Charizard (Gen II) also had Dragon Tail.
Gastly (Gen II) Bad Dream's English and Japanese names are the same as Darkrai's ability.
Machop (Gen II) Double Chop's Japanese name is the same as Dual Chop a Gen V moves that Machop can't learn.
Corphish (Gen III)Octillery (Gen II) Suction Cups became the pokemon's Gen III ability.
Scizor (Gen II) Second attack "Heavy Metal" has the same English and Japanese name as the ability.
Tangela (Gen II) Tickling Vines has similar English and Japanese to Tickle, a move Tangela gets in Gen III by level up.
Machop (Gen II) Fling
Granbull (Gen II) Karen's Tyranitar (Second move is Fling) Machamp; this version used in TCG game boy game. Makuhita (Gen III) Geodude (Gen III) Pebble Throw's Japanese name is the same.
Trapinch (Gen III)Sand Veil, During Gen II. [Burrow's original Japanese name is the same]
Diglett DugtrioJanine's Ariados Released in Gen III this card has Poison Fang.
Arbok (Gen I)Brock's Kabutops Released before Mystery Dungeon existed, this card has Vacuum Cut
Lapras (Gen III) Energy Ball
Poliwhirl (Gen III)Flygon (Gen III) Air Slash (Gen V move)
Skarmory (Gen III) Pick On's Japanese is the same as Pluck.
Electrode (Gen III) Mass Destruction's Japanese name is the same as Aftermath, which electrode cannot have.
Magma's Poochyena Snarl during Gen III.
Meditite (Gen III) Double Chop's Japanese is the same as Dual Chop.
Heracross (Gen III) Get Even has the same Japanese name as Retaliate.
Larvitar (Gen III) Retaliate
Bagon (Gen IV)Rattata (Gen III) Scramble has the same Japanese name as Quick Feet.
Gyarados (Gen III) Sharp Fang's Japanese is the same as the Gen IV item Razor Fang.
Poochyena (Gen III) MightyenaRocket's Moltres (Gen III) First attack is "Fiery Dance"
Flareon (Gen III) Japanese is Fiery Dance
Salamence δ (Gen III)Shiny Mudkip (Gen III)Spring Back has Payback's Japanese name
Shiny Torchic Shiny Treecko Shiny PikachuMagcargo (Gen III) Smooth Over's Japanese name is Bulldoze.
Slowking (Gen III) Original Japanese on Prize Shift is the same as Ally Switch
Metang δ (Gen III) Sharp Claws has same Japanese as Razor Claw
Groudon (Gen III) Hard Rock has the same Japanese name as Solid Rock (ability).