Since this is your preferred option I'll start with Rapid Spin. Turtonator, Blastoise, and like Jhnfui mentioned, Dhelmise are good options. Torkoal is slow, and not a very hard hitter, but it has good Defense. Avalugg is a solid physical wall, but can easily be knocked down with a STAB Fire Blast. Turtonator and Dhelmise would be your best options, being pretty slow, defensive and strong.
The best Pokémon I could find was Lurantis. It's surprisingly bulky, pretty slow, and hits well. Most Pokemon with Defog are at least decently fast, so Lurantis was unexpected.
Overall, I'd say Turtonator, Dhelmise and Lurantis all all good options. Dhelmise has the best Attack, Turtonator is the slowest and has the highest Defense, and Lurantis has well rounded stats. Choose whichever suits your team best.