@Theworldbreaker: 4 - not my kind of character. way too high up the cosmic ladder.
I have endless possible fusions, but I'll start with this one: Majestic + Thor = Majestros Odinson (basically, Majestic with Thor's hammer/weather powers and mystic knowledge in addition to his scientific knowledge, he's the top hero in a Marvel/Wildstorm universe.)
Super super durability and they just seem to get stronger and more adaptive every time. Imagine superman so distraught that a doomsday like character can keep constantly making tiny baseball size like blast that blow up multiple planets with billions of people each and probably not being able to inflict damage by himself on them with their combine durability