The young fans travelled from seven countries including Brazil, India and South Africa to be the matchday mascots as United took on Swansea.
As a special surprise, the United players walked out of the tunnel before the match with the mascots' own names on the back of their shirts. The new Chevrolet-sponsored home jerseys were then presented as gifts to the children.
The event was part of Chevrolet's 'What Do You #PlayFor?' campaign, which aims to spread football and the power of play to areas of the world that need the hope, optimism and possibilities it provides the most.
Wayne Rooney made his first appearance since being named United's new captain and scored an acrobatic equaliser after Ki Sung Yeung's opener, but Gylfi Sigurdsson scored a late winner for Swansea.
To learn about about each mascot's individual story and the 'What Do You #PlayFor?' campaign, visit www.ChevroletFC.com.