My father used to tell me that when we were kids there were frillies living near the sheltered beach our family used to visit, and how they would get up on their back legs and run.
I can't remember ever seeing them (would have been too young at the time) but believe that they probably were there at some point, dunno what other kind of large lizard in NZ would get up on their hind legs to run.
Would love some to be in NZ their frills are awesome