Yesterday I was thinking do we ever see The Village Guardian when Number 6 isn't around? As it happens only once, not that The Village Guardian appears in every episode.....but it does appear in the end credits of each episode. That once takes place in Number 2's office in 'Once Upon A Time sitting in Number 2's chair as it rises up through the floor. If it had not been for that scene, then yes, The Village Guardian would only appear when Number 6 was around......except within the closing credits!
Be seeing you