In AGT: Fantasy League, the judges will each choose a roster of their favorite acts picking from winners, finalists, viral sensations and fan favorites from America's Got Talent and Got Talent franchises around the world, all pre-selected by viewers in an initial vote.
For the first time in show history, the judges will be competing alongside the contestants and will mentor and guide the acts throughout the competition with the hopes of earning bragging rights and seeing an act from their team crowned the champion of AGT: Fantasy League.
- Source
TVMaze