The past history of Captain Marvel on Earth-804 mirrors that of his Earth-616 counterpart until the Kree-Skrull War. In this reality, Rick Jones would be killed by Ronan the Accuser. Mar-Vell, at the time would be forced by the Skrulls to build an Omni-Wave Projector to help in their war effort. When Mar-Vell completed the device, he would attempt to use it to contact Rick and learn that he had been killed. Furious, Captain Marvel would destroy the device and along with captured Avengers Scarlet Witch and Quicksilver would combat their Skrull captors.
Dorrek VII would release the Super-Skrull and order him to attack Mar-Vell. The two would battle, and Mar-Vell would ultimately slay him. By this point Dorrek VII would have been slain in combat against rebel forces led by his daughter Anelle, and she would succeed him as the Skrull leader. Simultaneously, the Supreme Intelligence would have merged with the corpse of Rick Jones and used it's power to slay Ronan and order the Kree to stop hostilities. Supremor would leave Captain Marvel in charge of the Kree empire, and Mar-Vell would make it his priority to forge everlasting peace with their longtime enemies the Skrulls.