In a small bowl, whisk together mayonnaise, ketchup, relish, mustard, vinegar, and garlic powder until smooth and well combined.

In a medium bowl, combine ground beef with salt, black pepper, garlic powder, onion powder, and paprika. Mix gently until seasonings are incorporated, being careful not to overwork the meat.

Heat a large skillet over medium-high heat and add the seasoned ground beef, breaking it into small crumbles as it cooks. Cook for 8 to 10 minutes, stirring occasionally, until fully browned and most liquid evaporates.

Once beef is cooked through, carefully tilt skillet and spoon off excess grease, leaving a small amount for flavor.

Warm the tortillas by placing directly over a gas flame for about 10 seconds per side or wrapping in a damp paper towel and microwaving for 20 seconds.

Dice onion, pickles, and lettuce into bite-sized pieces; slice tomato if using.

Lay a tortilla flat and spread a generous layer of special sauce down the center. Layer half the cooked beef, 2 slices cheese, half the lettuce, half the onion, half the pickles, and tomato slices if desired.

Fold the bottom of the tortilla up over the filling, tuck in sides tightly, and roll away from you into a secure wrap. Wrap in foil or parchment paper. Repeat with remaining ingredients.