Rob told US radio show host Ryan Seacrest that he thinks his niece's name is "cool", adding that he reassured Kim and Kanye to stick with their unusual choice.
"I told Kim and Kanye this, I'm like, 'Yo, people are always going to talk whether it's good or bad. There's always going to be the haters, but do what you guys feel'," he told listeners of On Air With Ryan Seacrest.
"Like, you know everyone's going to say, 'Oh, you're coming up with some weird celebrity, crazy name'. You know how it is.
"[But] North West, it sounds cool! [And] North is the highest point, so it has a lot of meaning to it."
Rob is yet to meet his baby niece but he is planning on spoiling her rotten when he does get to give her a cuddle.
"I'm actually looking for like a giant animal to get North. The baby came a month early. It's so small, she needs a big stuffed animal," Rob said.
Earlier this week, Kim's mother Kris Jenner spoke out about North West, saying that she too approves of her unusual name.
Yesterday (26 June), Kris also confirmed the meaning of North is 'highest power'.
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