Hardest to Catch Pokemon

I myself think it's a tie between the darned Mesprit and Cresselia.

i think you should go with non wandering pokemon.

for non wanderers i pick rayquaza

Rayquaza is not on the DS as a catchable pokemon, is he?

the hardest to catch pokemon has to be the legendary godly MAMASWINE (note joke inented but mamoswine in my fav poke)He is availbible for grabs when u beat the game get a snover and froslass in party and use SUPERE KAMAHAMEHAAAAAAAGods_Angel_Bob

I used my masterball on him, but he broke free.