Bob seems to show a fear of bees and, after Weebl's bath water destroyed his computer in "Upgrade", a fear of liquid. He is also allergic to cat fur ("Dan"), as characterised by pink spots, red eyes, and huge swelling lumps on his head. His new computer is apparently possessed by – and has affiliations with – the supernatural, as it gets demonic messages, shoots blood from the screen, makes groaning noises and came with an Angel of Death and an evil lamp (the reason being that 'Pissy Werld', the place from which it was purchased, is owned by a demon).