IIn season 15, episode 21 of "Shark Tank," entrepreneurs pitched Sharks an array of products, including a robotic burger vending machine, bespoke hats that display hometown pride, customizable footwear, and a resistance band to develop the perfect jump shot. Michael Rubin returned as Guest Shark. Get the full details on the four companies featured below! Roboburger is the world's 1st fully autonomous miniature robotic restaurant that freshly cooks a custom ordered hamburger in just 4 minutes. Roboburger is a digital all electric kitchen that is literally plug n play. Roboburger has its own freezer, grill and dishwasher and can operate anywhere to provide HOT & DELICIOUS sandwiches 24/7. Roboburger is designed to bring freshly cooked, RESTAURANT-quality sandwiches...burgers, breakfast, chicken, plants etc... to travelers, college students, hotels, convenience stores.