You could maybe tie the Aphrodite Pokemon thing with encantados, Brazilian dolphins who take human shape, go to parties, and seduce women back to the water with them. Maybe throw in a mermaid/siren angle too? It’s deceptive and sometimes pretends to be a human. It can sing a beautiful song that’s lured sailors into wrecking their ships. Though this is just starting to sound like Mega Lapras or something of the sort.
Well, the thing is, at this point you’re doing a Pokémon based on the encantado, not on Aphrodite – which, to be honest, I think is sort of a better place to start anyway. The notion of Pokémon based on the Greek gods doesn’t really sit all that well with me, just because the whole point of the Greek gods is how human-like they are in their moods, desires and flaws. It’s really interesting from a cultural or theological perspective, but kind of “meh” as a basis for designing Pokémon. Or at least, that’s what I think.