Davis, who is of Ngāpuhi descent, said he was in the role to make a difference for Māori.
Speaking of Leonard St, a run-down cul de sac in Kawakawa in the Bay of Islands where he grew up, he said: "Inequality, poverty ... this street lived it, and it doesn't have to be this way."
He became emotional when asked what he wanted a Māori child to be thinking when they looked at him.
"I want them to be thinking about themselves to be honest, and to think that there shouldn't be any restrictions on what they can achieve in life. You might come from Leonard St, Kawakawa ...," he trailed off.
With tears on his cheeks, Davis said that thinking about all the good people he grew up with, "just life didn't pan out right for them. Leonard St's just a metaphor for all the other Leonard streets across all the other towns in New Zealand."