Someone has to carry the weight of the acts of every exe and Felisyus, who was a cruel exe king, was forced to do so by his servants after they revolted against him. The day he carries the weight of every act to the end of the universe he will be free. Every time an exe does something terrible the rock only gets bigger. No-one can carry the rock but him for if they tried they would crumble under the ever-growing weight. Everytime he drops the rock he restarts his journey.
One must imagine Felisyus happy. Also since hes been carrying the rock for millions of years he's gained lots of knowledge so if you want you can ask him stuff