Marvel Guardians of the Galaxy Vol. 2 Best Friend T-Shirt Rocket might be all talk and Groot might be no talk, but there's no getting between these two best friends on the Marvel Guardians of the Galaxy Vol. 2 Best Friend White T-Shirt! Baby Groot and Rocket are portrayed in a sleek black print as they race into battle on this cool white Guardians of the Galaxy Volume 2 shirt. 100% Cotton.