I found it dificult but mespirit when he faints will just teliport to another place and for uxie and azelf you need to defeat the elite four and Cynthia then you can face them again.
you get a 25 boost on stats .
Yes
Yes Mesprit likes Azelf. She has a crush on him I'm a fan of AzelfxMesprit
they are the three legendary trio of lakes they live in three lakes azelf in lake valor mesprit in lake verity and uxie in lake acuity
sorry man, but you cant get a azelf uxie or mesprit in Pokemon soul silver...
No
little red pokeball shows up by them and u can use them in battles.
=no=
Azelf Mesprit and Uxie combined.
Uxie, Mesprit and Azelf are three different legendary Pokémon that do not evolve to or from any other Pokémon.
In platinum it would be better not to kill mesprit uxie and azelf, it would be better to catch them.
Its not Azelf its Mesprit that flees and you get it by using the Pokemon tracker app and you wil need a Pokemon with mean look so Mesprit does not flee.