Sonic X did not end well. Season 3 was one of the more innovative Sonic seasons ever, but it was overshadowed by complaints about horrific dubbing and terrible rewrites from people who saw the originals in Japanese. Plus, 4kids created a plothole with the Cosmo situation. In the original script, she was slated to die. But because "everything is sunshine and roses and nothing bad ever happens," according to them, they rewrote the dialog and cut out important scenes, thus removing the drama. They then did even more of a hack job on the final episode, ending it with Chris going home, but we never find out if he gets there. You'd think those were intended to indicate another season, but for now they're just plotholes.