In a mixer, food processor or large mixing bowl, combine egg yolks with mayonnaise, shredded cheddar cheese, pimentos, Dijon mustard, garlic powder, black pepper, salt, and hot sauce. Combine until smooth.
Add filling to a piping bag (or use a spoon) and pipe into each egg.
Garnish with chopped green onion, a dusting of paprika, bacon, and pimentos.
Keep refrigerated until ready to serve.
Adjust seasonings to personal taste. Add more hot sauce or jalapeños for spicy pimento cheese deviled eggs. More garnish ideas: a sprinkle of sea salt, sriracha, candied bacon, chives, etc.