Originally Posted by Billy Has 493
And Uber So Does that mean Noone Is Aloud an uber pokemon in there team Or..
Oh Does It mean your Only allowed one uber pokemon and i have entei which means
Well, no, not necessarily. Uber is basically a classification of a Pokemon for battle tiers. An Uber is a very powerful Pokemon with high base stats, and sometimes the Pokemon doesn't even have to be a Legendary to be of the Uber class (case in point, Garchomp). If you are battling people via websites like Shoddy Battle, they might restrict the use of Ubers among other things like certain items, moves, etc. Aside from that, it is perfectly fine if you use Ubers in your team. Just make sure that you follow the rules and regulations set aside for specific online battles.
Also, Entei is not an Uber. Rather, it is Under-Used (UU). You can check this tier list here
, found at Smogon.com, and see which Pokemon fall into which tier classification. Going back to your second question, though, you can have as many Ubers as you want on your team; there are no rules against it (unless, as stated above, the person you wish to battle doesn't want you to use Ubers).
I hope that all didn't sound too confusing, and I hope it helps in some way. :)