Who's Haku?

.. And, we never saw the Kyuubi in action, during the Gaara match. It was a combined Henge. A mere transformation. Nothing like the original.

In regards to this moment, though .. could Gamabunta not see himself? I mean, why didn't Gamabunta say something? Afterall, it was Gamabunta who faced the Kyuubi at the moment of its sealing.