His 34-year-old brother Daniel Kopa, who was hit by a car while crossing the road in Auckland, died after his life support was turned off on Thursday afternoon.
Chris, who lives on Australia's Gold Coast, told the Herald he had just woken up when he learnedof his brother's death.
"I got a call from his wife Calli... I knew something was wrong by the way she sounded. I knew what had happened."
She was "trying to hold it in and keep her composure," Chris said.
"He had a laugh everyone will miss. He was cheeky, a bit of a joker; he just didn't take life too seriously."
The father of four young girls - Harper, 5, Zoey, 2, and 8-month-old twins Eden and Charli - was "a Papakura boy".
"We grew up there, we have a big family with four brothers and two sisters. He was the eldest."
34-year-old father Daniel Kopa was fatally injured after being hit by a car in Central Auckland.
Chris said losing their eldest sibling was hard, because he was their role model.
"Our youngest brother is 15, so it's been hard for him... Dann loved his family and made sure we always had time together."
Dann's brothers liked to tease him because "he was such a hard man as a young guy", but his daughters had softened him, in a good way.
Chris said his brother had a bike when his daughter Harper was younger, and he put a seat on the back so he could take her for rides.
Turning off Dann's life support was difficult, Chris said. Dann held his daughters in his arms while it was turned off.
"I've got a two-year-old, and it was his birthday the day we turned off his life support... But he understands and wanted to be there for him, everything just happened so quick."
Calli was heartbroken, but she was surrounded by loving family, he added.
Dann Kopa's best friend Jonny Chambers, 34, said Dann was "just an amazing dad", always there for his family and friends.
The pair met at Papakura High School and were best men at each other's weddings.
"He always strived to improve himself, and was constantly trying to advance himself."
Dann and Calli's children were lovely natured, he said: "You get that when you have such a devoted dad."
Chambers said he wanted to express their gratitude for all the support the family had received.
"There were people camped in corridor at the hospital, and the staff tolerated that for over three days. It was hundreds of people coming through, and I know that must not have been easy."
