Red Robin has also decided to make a hamburger bun made completely out of ramen. Which I don't understand why anyone would want to eat that at all. Even as a college student, I don't find that appetizing.
In Hawai'i there was this food truck truck guy that would go around and sell ramen bun burgers. There was always this huge line at all the events that he showed up to. I never tried it so I don't know if it lived up to the hype
In the US, they are manufactured by Nabisco and in the UK by Cadbury.