>>44922054>>44922057Not OP but fireflies glow using a chemical reaction that happens inside their bodies called bioluminescence, so if any non-firefly Pokemon were to get it, it would be Pokemon that can glow using a similar means, like Manaphy and Xurkitree. Theoretically, Pokemon like Lanturn and Shiinotic could get it too since those are both based on creatures with bioluminescence. Ampharos is kind of a weird case since you can't really argue that its abilities are or aren't a chemical reaction.
t. person that likes weird nature shit