Piplup? Lolz, Infernape is more popular...and seems to be loosely based off of the main character of one the greatest books of all time, haha. Well...my favorite starters for the 4th gen, haha.
Anyways, I say this only because the most useful set on Empoleon is arguably agility set, which is an egg move if I recall correctly. Infernape isn't as strict on eggmoves imo...and I don't believe I've once used Torterra, haha. Anyways, it doesn't really matter which you RNG, since Modest Agility Empoleon is already a fully redis poke methinks, haha. Just the way I see things ^^
Good night though - I hope my luck for you carries over to this one too ^^