you could do backstories on old characters and introduce new characters???
Long ago, in a message board far, far away, there was a Mudkip that was feeling sorry for himself because he had dots on his face. And then he met a newly-hatched Togepi, and he showed the Togepi his favourite toy, the Off-face. The OF takes the freckles off of your face for you. The Togepi thought this was so cool that he bought his owna nd used it regularly. He evolved into Togetic. The end~