"Maori people, like everyone else, all have colourful pasts so I think it's an advantage more than anything."
Mr Flavell said Mr Iti has been a supporter of the Maori Party from its fruition and put his name forward when the opportunity arose this election.
"I totally support Whanau Ora and I believe that Maori need an independent voice in Parliament. The Maori Party is the only independent Maori voice in Parliament," Mr Iti said.
He said he believed the Maori Party also built trust with mainstream New Zealand because of the way they conducted themselves.
"The Maori Party has got credibility. They've established themselves as an independent Maori movement that walks the talk. I also support them sitting at the decision-making table of Government, it's the only way Maori can bring about change. It's no good moaning on the outside."
He was supportive of the co-leaders Mr Flavell and Tariana Turia as well as his Tuhoe relation Rangi McLean who is standing in the Tamaki Makaurau electorate.
"I have supported the Maori Party since Tariana Turia, in an act of political heroism crossed the floor and formed the Maori Party. I support Te Ururoa and Rangi because they are both 'kanohi kitea', people who are seen in their communities."
President of the Maori Party Naida Glavish said they were thrilled to have him on board.
"Tame Iti has spent his life fighting for Maori people. He's been at the cutting edge of social and cultural change in Aotearoa," she said.