A 2.1-metre tall Kiwi is being deported from Australia because his size makes him an "unacceptable threat to the national interest".

Hayden Harlem Tewao, 26, who weighs 200kg, had his Australian visa cancelled after he committed an armed robbery in 2010.

Immigration minister Chris Bowen ... said the brutality of the crime and Tewao’s role as an enforcer made any future offending "potentially very serious".

Tewao, who is known as "Tiny", appealed to the Australian Administrative Appeals Board which overturned the decision to deport him to New Zealand, saying he had a low risk of reoffending and had shown remorse for his crime.

However, Immigration Minister Chris Bowen used his ministerial powers to override the decision, citing Tewao's "exceptionally large" stature as being a risk factor that made it not in the national interest for him to remain.