"The Megastore"
I would say "discount this" or "5 for a pound?" as I punched each henchman.
When they bring out the special, stronger, battle enhanced henchman, there would be a lengthy battle. Afterwards I would probably say "clean-up on aisle 3" as I spit on the limp corpse.
After defeating the evil mastermind behind it all I'd say "I can't be beaten on value". Either that or I'd lift him up and spin him above my head shrieking "TURKEY BONUS" before throwing him from the balcony of his tower.
Yes, I think I'd call myself "The Megastore".