He said Cunningham fitted in easily among the Blues squad, and it was this type of "holistic" nature that made him stand out.
Officially opening the academy was a "privilege", he said.
"He was a pretty relaxed character, he fitted in easily and he had self reliance."
Sir Graham also told the inaugural Jarrod Cunningham Academy students that they must excel in their sports lives and in their personal lives.
"It's an opportunity," he told the students.
"An opportunity to be better individuals if you like. The best All Blacks... they've got their life together outside of the sports field. Those sorts of things are very important. Make sure you get the rest of your life in order first, because that's what McCaw is like, Carter is like, Smith is like."
The academy comes at the initiative of the Jarrod Cunningham Youth Sport Trust, which since 2008 has put back about $150,000 into the local community. Cunningham was a student at Havelock North High School.
The academy was established after the trust consulted the school and students about how it could contribute, and Mr Harvey said the academy would strive to "equip" students will skills on and off the field.