Marvel Guardians of Galaxy Vol. 2 Mantis Triangle Girls Tanks Mantis can sense other people's emotions...and she knows you're in love with the Marvel Guardians of the Galaxy Vol. 2 Mantis Triangle Black Racerback Tank Top! The telepathic Guardian, Mantis, is framed within 2 triangles with her name "Mantis" printed beneath her on this cool fitted Guardians of the Galaxy Volume 2 tank top. 60% Cotton, 40% Polyester.