On Saturday, he celebrates his 20th birthday, and we asked him 20 questions about United, food, music, fashion and his bucket list to mark the occasion.
It's fitting that after such a special night in M16, Kobbie begins his birthday interview by paying tribute to the supporters.
Asked for one thing in football that he'll never take for granted, Mainoo says: "The fans because of the support they have for us in the stadium; you hear them chanting all throughout the game and the love that they show."
Kobbie goes on to talk about his dream dinner party guests, his favourite food spots in Manchester, the TV series he always comes back to on long journeys and which team-mate he'd pick to travel with.