suicune is bulkier than whimsicott and he learns tailwind too. Cresselia can take the role of uxie with more bulk and access to thunder wave, trick room, icy wind and helping ando, so she can provide good support for the team. metagross is another great pokemon for bulk offense like air baloon heatran or swampert, both of these three have good attack and defense stats expecially for swamper and metagross. Scizor can also help with excellent bulk and (banded) bullet punch. you can need a scarf user in the role of late-game sweeper, hydreigon can help with powerful STABs like dragon pulse and dark pulse. also scarf jellicent with water spout is good. reuniclus and conkelldurr are usefull in case against trick roomers, but you know, pokemons are 649 so it will be impossible to try all the combination, i can only suggest you to try all the combos as well as possible and then choose what's better
Dude I really need to ask you to use better english, it's really quite annoying to read your posts.