That is the response Zlatan Ibrahimovic gave in a revealing interview with Sports Illustrated when he was asked who his favourite team-mate would be.
Ibrahimovic and Vieira had competed against each other in past years, but played together for the first time in 2005, when the Frenchman spent a season at Juventus after thrilling Arsenal supporters for the best part of a decade, winning a hat-trick of Premier League titles and four FA Cups as influential box-to-box midfielder and then captain.
What Ibrahimovic admires most when reflecting on the time spent with Vieira in the Serie A, was the dog inside him, his fighting spirit and how one could learn from him merely by watching him train and play.
The Swede, himself a fierce competitor, said: "When he came to Juventus he came with big qualities. He had a strong mentality and every training he was like a monster.
"He wanted to destroy everybody, but not destroy in a negative way. In a positive way. Like how you train is how you play, and I watched him and I learned a lot."
Vieira went on to lift four Scudetti at Inter, three of them with Ibra.