Jack is Golvis' magic guitar and the source of his power. He appeared in Pac 'n Roll.
Jack has the appearance of a red guitar with three spikes on his Headstock with a single blue eye in it's center, and a bent Fretboard. His fretboard can alter itself to look like a mouth or a nozzle.
Powers and abilities
Jack has quite an array of powers that allow him to do many things, such as transforming living beings and objects and inhaling large amounts of air and releasing it with great force, and he may also be the reason why Golvis isn't affected by Power Pellets. Aside from his powers he can also be played like any other guitar as demonstrated by Golvis.