The scrambled dog is a Columbus, Georgia sandwich that has been deconstructed before it reaches you. A hot dog is chopped into pieces, set in a split bun, and then buried under chili, diced onions, pickles, hot sauce, and a deliberate scatter of oyster crackers, the whole thing served in a boat or a bowl and eaten with a spoon. The defining move is the chopping. By cutting the dog into bites and scrambling it under its toppings, the sandwich abandons the entire premise of a hot dog as a thing you hold and bite along its length, and becomes a layered pile in which every spoonful carries sausage, chili, crunch, and heat at once. The bun is still there, underneath, doing structural work as a soaked base.
The craft is in the chop and the cracker. The frankfurter is cooked, then sliced into rounds or rough pieces so it can be eaten mixed rather than whole; this is what lets the chili reach every part of the sausage instead of just coating its outside. A fine, beanless chili is ladled over the top, hot and loose enough to settle into the gaps. Diced raw onion and chopped dill pickle supply the sharp, acidic counter to the rich meat sauce. The oyster crackers are not a garnish or a side: they are scattered directly over the chili so they begin to soften at the edges while staying crisp at the center, which is the texture that makes the dish what it is, a soft, wet pile with a deliberate brittle layer running through it. Hot sauce goes over the lot.
The variations are small, because the scrambled dog is tied tightly to a single lunch counter and its imitators rather than to a broad regional family. The amount of chili, the choice of mustard alongside the hot sauce, and whether cheese is melted into the pile are the main points of difference. Its relatives are the chili dog and the Carolina-style slaw dog, both of which keep the sausage whole and dressed rather than chopped and scrambled. Each of those deserves its own article rather than being crowded in here.