"TLDR: Family-owned, this is one of the best pizza restaurants in the SG Valley. Dine in or take out available. This is not a chain restaurant so the other red devil pizza places are not affiliated. However, the Upland location has a similar logo so there may be a connection. I 've not asked. Red Devil Covina serves good sized pizzas in the style that most Californians have familiarity. Dough is stretched across thin pans, spread with a tasty tomato sauce, then topped with a good amount of cheese and your topping(s) of choice. The pizza oven is large with a circular conveyance so the pizza 's come out with a crisp bottom and chewy texture. I like their pizzas and rate them above most you will find in the San Gabriel Valley. We 've eaten inside in the past and ordered a green salad with the pizza which is fresh. The dining room is unimpressive but serves it 's purpose. They have a large banquet room that is perfect for a large group."