Board Thread:Questions and Answers/@comment-3013260-20140519113920

There's a possibility that these characters might appear in the series, probably in the Season 2 finale or somewhere in Season 3.

Fugitoid might appear considering he's been confirmed to appear in an article.

As for the Triceratons, in the latest episode "Pizza Face", there was an easter egg on the phone box saying that 'The Triceratons are here' which possibly foreshadows that they'll come in the future.  