I've been trying to catch Thundurus, but I don't know which is the best Poké Ball, the Quick ball or the Ultra ball?

I left the wild Thundurus with 1 hp and asleep, but I don't know if it counts as one turn on the new encounters or if my previous turns carry over. I am using both types of Poké Balls at the moment, and it does not look like any are good. >.<

1 Answer 1


Despite the fact that you may have been pecking away at wandering pokemon for many, many turns, whenever you meet them, it starts a new battle, from turn 1.

This means that the Quick Ball has twice the capture rate (x4) than that of the Ultra Ball (x2).

  • Yep, quick balls work (relatively) great for this. The catch rate just seems low because...it's extremely low.
    – Ben Brocka
    Feb 19, 2012 at 5:04
  • ty for the quick answer =) i should have save my master ball for him >.< Push me luck =D
    – Michel
    Feb 19, 2012 at 5:41
  • @MichelAyres it might also help to know that status effect change your odds. I believe it is 2× increase for sleep or freeze, and 1.5× for others.
    – tzenes
    Feb 19, 2012 at 8:17
  • @tzenes Most legendary Pokémon have a catch rate of 3. Assuming its HP is almost depleted and it is paralyzed, and Dusk Ball is used at night or in a cave, then the chance of catching the Pokémon with each ball in Generation IV is approximated by 3 * 3.5 * 1.5 / 255 = 15.75/255 ~ 6.2%, resulting in about 16 Dusk Balls required to catch the Pokémon on average. If an Ultra Ball were used instead, then the chance drops to 3 * 2 * 1.5 / 255 = 9/255 ~ 3.5%, which amounts to about 28 Ultra Balls on average. Bulbepedia
    – Michel
    Feb 19, 2012 at 13:25
  • @Michel, yes 1.5 fits for paralyzed
    – tzenes
    Feb 19, 2012 at 20:16

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