Mr. J's Char Burgers, located in Fontana, CA, offers a diverse menu with a focus on breakfast options, sandwiches, and beverages. Their breakfast burritos, sandwiches, and beverages like smoothies and shakes are popular among customers. The brand also caters to vegetarians and offers various amenities such as delivery, takeout, reservations, outdoor seating, and Wi-Fi. Customers praise the fresh and flavorful food, with highlights like the pastrami, chicken tenders, and veggie burger. The small chili cheese fries stand out for their well-seasoned meat and generous cheese portion. With a friendly staff and ample seating for groups, Mr. J's Char Burgers provides a welcoming dining experience for everyone.