[@Whimsley] I'd say use the Pokedex, but remember experienced trainers can tell the difference between male and female all on their own. If they look different or act differently in the games and anime based on sex, then I don't see why they can't here. Try everyone in Shinx's evolutionary line, for example XD

Roleplay doesn't need to be realistic. Sure, why not? :P

Also, who is this other Delta you speak of? [s]That's the 7th one this week...! I'm going to have a graveyard when I'm done![/s]