Yes you can! After he faints go back and he'll be there.
Easy if u dont catch DIALGA and you kill it, it will say dialga vanish or soming
If Cresselia faints [same as any legendary pokemon] you cannot catch it ever unless you save before the battle and restart if you make a mistake.
U can't
After the battle ends the Pokemon will still evolve however you will have to revive it if you still want to use it.
If you beat Dialga and Dialga faints, you can no longer catch it.
Yes you can! After he faints go back and he'll be there.
it faints and disappears
she faints
they will stop the fight
Attempt to catch?: When you spot the Pokemon, save in the place Terrakion is and if he faints start over (Reset DSi or turn off DS and your still in the place you saved at)............... he disappears when he faints.
i think Bella faints
Dante faints when he cross the river.
nothing.
Easy if u dont catch DIALGA and you kill it, it will say dialga vanish or soming
Number 149 happens to be Dialga, the legendary time pokemon
Nothing happens. It just faints and then, you can search for more Unown.