Trainers,
here’s the full dump of cross generation Candy requirements. Rock on!
Golbat -> Crobat: 100 zubat candies (nothing special)
Gloom -> Bellossom: 100 oddish candies and a Sun Stone
Poliwhirl -> Politoed: 100 Poliwag candies and a King’s Rock
Slowpoke -> Slowking: 50 Slowpoke candies and a King’s Rock
Onix -> Steelix: 50 Onix candies and a Metal Coat
Chansey -> Blissey: 50 Chansey candies (nothing special)
Seadra -> Kingdra: 100 Horsea candies and a Dragon Scale
Scyther -> Scizor: 50 Scyther candies and a Metal Coat
Eevee -> Umbreon: 25 Eevee candies (nothing special). nickname Tamao for 100% chance
Eevee -> Espeon: 25 Eevee candies (nothing special). nickname Sakura for 100% chance
Porygon -> Porygon 2: 50 Porygon candies and a Up-Grade