History of MMA in Oz and NZ?

I was wondering what the history of Pankration, and Vale Tudo was in Australia, and New Zealand. A friend of mine from New Zealand told me that Catch is still competed in New Zealand. Also (although this seems ridiculous to pt out) in many Japanese fighting games such as the Tekken and Virtua Fighter series, there are Vale Tudo (Marduk from Tekken 4) and Pankration (Jeff) fighters hailing from Australia. I though that there had to be more than a coincidence, and that there was a correlation between combat sports and Oceania being a location chosen.