User blog comment:Superguy79/So if Zatanna joined the team.. Opinions?/@comment-167456-20111023072148

Really enjoyed Zatanna's appearance on the show. Aww... Robin's got a crush.

As for Arrowette, people have been saying she'd make an appearance ever since Artemis was confused with Arrowette in early promotional stuff (before the series even aired). I wouldn't go placing too much reliance on that (especially from Wikipedia).