Quad II is the second computer generated sculpture by the American artist Robert Mallary, created in 1968. Constructed in layers of wood that correspond to computer outputs, the sculpture was designed in TRAN2 with the Fortran programming language. In 2023, the Robert Mallary Archive created a study of Quad II in collaboration with the artist Jonathan Ojekunle by 3D scanning the sculpture and cutting the layers with a CNC machine. This Quad was exhibited alongside the original at Pioneer Works in Brooklyn, New York.

By creating a new 3D scan of this sculpture, the Robert Mallary Archive has reimagined the artwork in a virtual environment. It is compatible with virtual reality and augmented reality for offline viewing, and a 3D printable file. AR versions of Quad II and Quad IV were debuted in Tokyo, Japan, January 2025.