PokéBase - Pokémon Q&A
2 votes

It's in leaf green and a ? Keeps apering ...

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1 Answer

2 votes

You need to defeat the Elite Four and obtain the National PokeDex before evolving. Crobat is a Gen II Pokemon, and isn't in the PokeDex.

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but LG is gen3...
Did you mabye give it an everstone?

it wouldnt enter the evolution screen if it was holding a everstone
@TR, LeafGreen still can have Gen 2 Pokemon.