Expects the seed to contain /boss\d{4}\d{2}/ where the first 4 digits are the species ID and the next 2 digits are the form index (left padded with 0s as necessary).
/boss\d{4}\d{2}/
0
A PokemonSpeciesForm to be used for the boss, or null if no valid match.
PokemonSpeciesForm
null
Expects the seed to contain
/boss\d{4}\d{2}/where the first 4 digits are the species ID and the next 2 digits are the form index (left padded with0s as necessary).