What was the teenager you had that evolved into a Marumimitchi, Pochitchi, Furawatchi, or a Chohimetchi? I currently have a Ringotchi and I really want one of those~! h34r:
You can visit Rivenn's Tamadex site - from the Home page, open the Tamadex and it will allow you to click on a character and you can see which ones it might grow into: