I'm grateful that he doesn't appear for almost two seasons worth of episodes, between his last appearance in seasons 3, to when he shows up again in season 5. It's a wonderful time and it shows how unnecessary his character truly is for the overall plot. He can be mentioned now and then that he exists, but he doesn't need to be there. When he is there, all he does is cause drama and upset. He's bacially a useless plot device. A chocolate teapot.
