Yes, I know it's out, I've seen some of the new pokemon. However, I don't have any English names, and the Jap. names are hard as crap to spell and remember. So...that's that, for now.
Also, you can use Ditto if ya wanna, as long as you use it creatively. Besides, if you've seen the very earliest pokemon shows, Ditto can turn into more than just other pokemon, so it's a good choice.
The most active characters allowed to share a pokemon: 2
you have over 400 some odd pokemon to choose from, even without legendaries and 5th gen., so this should not be hard.
“…Judge not what a man has done, but judge what he could have done if he was a different bloke altogether. For art thou a leper? And a leper can changeth his spots…” --Rudy Wade, Misfits (Series 4, Episode 8)