Using Avon against either real or imaginary zombies sounds like a good idea to me. You're right, he wouldn't believe in imaginary ones - and I don't think real ones would have much of a chance against him.

If it comes to it, though, a friend and I have a long-standing plan to escape by hot-air balloon in the event of zombie apocalypse, so you're welcome to join us. Especially if you could steal a suitable hot-air balloon that can make the journey from the UK to Australia. (I didn't say it was a well-thought out plan...)

Avon vs the zombies... Hmm. (That was me thinking ficcy thoughts, because said friend adores imaginary zombie apocalypses and I like writing them - as long as the zombies stay off-screen.)