Brian and Akila get trapped inside this weird planet and Brian reprograms a broken Xerx robot and basically, it's like it's their baby. They have to raise it real fast so it can save them from fire monsters and junk.
The image gallery for Eyeball (episode) may be viewed here.
This is the second episode that Kek appears in, with the third being "Cleo & Zaid."
When Cleo pilots the ship into the inside of the eggshell planet, this is likely a reference to Star Wars: The Empire Strikes Back, where Han Solo pilots the Millennium Falcon into a similar hole in the ground to escape the attacking imperial ships, which ends up being a space slug, and then leaving the same hole, flying back into space.
This episode is one of the many episodes which shows a ship crashing. Other episodes include "Suspicion" (Zedge's ship), "Ladies Night" (Cleo's bike), and "Quarantine" (ship Cleo is piloting).