Trolla is a planet in the Timeless Dimension and the home of the Trollans, including Orko. It is a highly magical world that is ruled by the Crimson Council and the High Muck Muck.
Many of the laws of nature, physics, and magic are reversed on Trolla: trees grow upside down, fish fly like birds, fire-rays shoot water, Orko's magic is strong and reliable, and Prince Adam must speak backwards to transform into He-Man.