#395. In Pokémon FireRed and LeafGreen, Kanto Elite Four member Lorelei has a house on Four Island in the Sevii Islands.
Inside the house contains 6 Pokémon Dolls, but every time the Player defeats the Elite Four and enters the Hall of Fame 25 times, an extra Pokémon Doll will appear in the house. This continues until the Player has entered the Hall of Fame 200 times and a total of 14 Pokémon Dolls reside in Lorelei’s house. (X)
#408. In Pokémon Ruby and Sapphire, in order to receive a Diploma for completing the National Pokédex, Players must register every Pokémon except for Mew, Celebi, Jirachi, and Deoxys.
However due to a bug, Chikorita is also not required to receive the Diploma. (X)