Red
Blue A rare and elusive POKéMON that is said to bring happiness to those who manage to get it.  
Yellow A gentle and kindhearted POKéMON that shares its nutritious eggs if it sees an injured POKéMON.  
Gold It walks carefully to prevent its egg from breaking. However, it is extremely fast at running away.  
Silver Few in number and difficult to capture, it is said to bring happiness to the trainer who catches it.  
Crystal People try to catch it for its extremely nutritious eggs, but it rarely can be found.  
Ruby
Sapphire CHANSEY lays nutritionally excellent eggs on an everyday basis. The eggs are so delicious, they are easily and eagerly devoured by even those people who have lost their appetite.  
FireRed It lays several eggs a day. The eggs are apparently rich in nutrients and extremely delicious.  
LeafGreen A rare and elusive POKéMON that is said to bring happiness to those who manage to catch one.  
Emerald CHANSEY lay nutritionally excellent eggs every day. The eggs are so delicious, they are eagerly devoured by even those people who have lost their appetite.  
Diamond It is said to deliver happiness. Being compassionate, it shares its eggs with injured people.  
Pearl It lays several eggs a day and won’t share them with those who have evil in their hearts.  
Platinum A kindly Pokémon that lays highly nutritious eggs and shares them with injured Pokémon or people.  
HeartGold It walks carefully to prevent its egg from breaking. However, it is extremely fast at running away.  
SoulSilver Being few in number and difficult to capture, it is said to bring happiness to the Trainer who catches it.  
Black
White
Black 2
White 2 A kindly Pokémon that lays highly nutritious eggs and shares them with injured Pokémon or people.  
X It is said to deliver happiness. Being compassionate, it shares its eggs with injured people.  
Y It lays several eggs a day. The eggs are apparently rich in nutrients and extremely delicious.  
Omega Ruby
Alpha Sapphire Chansey lays nutritionally excellent eggs on an everyday basis. The eggs are so delicious, they are easily and eagerly devoured by even those people who have lost their appetite.  
Sun The eggs laid by Chansey are rich in nutrients and a favorite food of many Pokémon.  
Moon Not only are these Pokémon fast runners, they’re also few in number, so anyone who finds one must be lucky indeed.  
Ultra Sun It seems that other Pokémon’s efforts to take its delicious, nutritious egg away from it caused Chansey to get faster at fleeing.  
Ultra Moon Because the eggs on their bellies have been overharvested by people in the past, the Chansey population remains very small.  
Let's Go Pikachu
Let's Go Eevee A gentle and kindhearted Pokémon that shares its nutritious eggs if it sees an injured Pokémon.  
Sword The egg Chansey carries is not only delicious but also packed with nutrition. It’s used as a high-class cooking ingredient.  
Shield This species was once very slow. To protect their eggs from other creatures, these Pokémon became able to flee quickly.  
Brilliant Diamond It is said to deliver happiness. Being compassionate, it shares its eggs with injured people.  
Shining Pearl It lays several eggs a day and won’t share them with those who have evil in their hearts.  
Legends: Arceus This purehearted Pokémon shares its eggs with the injured. These eggs are so nutritious that they’ve been nicknamed “doctors’ doubles.”  
Scarlet This kindly Pokémon lays highly nutritious eggs and shares them with injured Pokémon or people.  
Violet It walks carefully to prevent its egg from breaking. However, it is extremely fast at running away.