This is PC in the AU. Expanded lore: As you know, PC is a library computer, but according to him, a person who was probably infected was using him, and spilled a biodegrabale plastic bottle with water (that had molecules of infected saliva), and affected the physical hardware of PC, but his complex consciousness, not being natively integrated to the PC he is now, didn't get affected, so that's why he looks infected. And yes, he was infected, but he's still self aware and he's not aggressive, unlike other organisms that truly get infected.
