Yes he did. He could end all with a mere thought.
maybe within HIS universe but he did not have this power over the main Marvel Universe, or the multiverse as Thanos did.
Here is his wikipedia entry:
Powers and abilities
Although not native to this dimension, the Beyonder was one of the most powerful beings ever to exist in the Marvel Universe. In the original Secret Wars storyline, he was the be-all and end-all of his universe that took corporeal form to better understand the nature of human beings. After his creator, Jim Shooter, left Marvel, writer-editor Tom DeFalco, displeased with Shooter's tenure at Marvel, re-tooled the Beyonder and altered his origin. He was no longer omnipotent as many initially believed, being an incomplete Cosmic Cube, with less raw power and the same limitations of a complete cube. Nonetheless, he possessed vast psionic abilities allowing him to manipulate matter and energy at a cosmic level beyond all but only the most powerful of cosmic entities. He once destroyed a galaxy on a whim to meet his needs during the first Secret Wars, although Molecule Man later recreated the stars in it, while transporting the city of Denver and the Super-Villains back to Earth. When the latter extracted the Beyonder from Kosmos, their battle took place in more than three dimensions, and threatened vast portions of reality. In Kosmos' 'Maker' incarnation, she was stated as capable of reversing The Crunch itself, essentially collapsing the entire universe. The Beyonder could endow himself with a corporeal form of practically limitless strength and endurance. He had the potential to reach near omniscience as well, but he died before his mind could reach maturity.
http://en.wikipedia.org/wiki/BeyonderIf there are comics that show him to have greater powers you should cite them and amend the entry so that it is accurate.
