Star Dream Soul OS

Star Dream Soul OS (or simply Star Dream Soul Operating System) is a secret final boss in Kirby: Planet Robobot, an upgraded (albeit souped-up) version of Star Dream after being slashed by Galacta Knight appearing solely in The True Arena mode,

Physical appearance
Star Dream Soul OS greatly resembles its regular form in its first phase, albeit the minor differences are the scar slashes left by Galacta Knight after he was summoned, and the zombified look, and the colors being inverted to black, red and beige. In its second phase, it once again resembles its regular form, despite the Access Ark and motherboard coating a gold color. In its 3rd phase however, it becomes very clear the color scheme is identical to the Galactic Nova.

Kirby: Planet Robobot
Star Dream Soul OS solely appears in The True Arena mode, battling exactly the same way, but with a twist compared to its regular counterpart.