Prisoners of the Patchwork Planet — David Gallaher

If you were the onlly living boy on the planet, what would you do? When 12-year old Erik Farrell runs away from home, he finds himself without his memory, stranded on a patchwork planet with danger lurking around every corner. Now every day is a struggle to survive. Luckily, Erik quickly makes friends like Morgan, a mermaid warrior and Thea, a teenage princess from a mysterious insect race. He'll need their help to escape the Dreaded Lord Baalikar and the evil Doctor once and maybe, one day, find his way back home.