Blastoise

Blastoise is famous for being the best user of Rapid Spin in BW UU. Its usable bulk and decent defensive typing give Blastoise many opportunities to enter battle and clear hazards from the field. Its access to Scald gives it a chance to burn Ghost-types that try and prevent the use of Rapid Spin and possibly ruin their longevity. It can even bypass their immunity to Rapid Spin entirely with Foresight. Scald's burn chance combined with Blastoise's access to phazing moves ensure that other Pokemon won't use Blastoise as setup bait. Unfortunately, though it is a good Rapid Spin user, it is a bad bulky Water-type. The other bulky Water-types, such as Suicune, Slowbro, Milotic, and Swampert, offer better bulk and various other advantages, such as recovery, better movepools, and useful secondary typings. These Pokemon often take up Blastoise's niche and make it hard to fit on teams. Even so, Blastoise continues to find space on teams as a great spinner.