you go to lake valor with a water type Pokemon and use surf go into the cavern in the middle of the lake he will be in there
you catch him in lake valor
you catch raikou on the last gym leader in the kanto leaders and you catch uxie in vermillion city from
yes uxie comes back to life after a while.
Uxie is in Lake Acuity after you catch Palkia. Go to Lake Verity first, go into Mesprit's cave, and the Professor will talk to you and you will be able to catch Azelf and Uxie. ~Lucario
the way you catch azelf mesprit and uxie.
Lake acuity cave.
=no=
ultra ball
you can't find Uxie again if you have knocked out Uxie, unless u defeat the elite four again.
no.
after you catch dialga
When you catch dialga/palkia or defeat them, you can catch azelf and uxie in the lakes.Mespirit will flee so you gotta get a poketech radar to track it down.