So I think to myself I’ll call the main character David Spear (second name chosen because of that cool character in Band of Brothers) then I wonder: haven’t I used David before? Of course I have – David McCrooger in Hilldiggers – so I need a rethink. In a piece I wrote off the cuff, prior to starting Penny Royal, I used a Scandinavian name and, glancing at it again, I thought yes, something like that. The first one to pop into my head was Thorvald, and I decided to do a search on it. Now, bearing in mind that this is about the black AI Penny Royal, a monster (sort of), it was interesting to come up with this is relation to the name Thorvald:

Thorvald the slayer of Nidhogg

Then a search of Nidhogg comes up with:

In Norse myth, Nidhogg (“tearer of corpses”) is a monstrous serpent that gnaws almost perpetually at the deepest root of the World Tree Yggdrasil, threatening to destroy it.

Also:

(Malice Striker, often anglicized Nidhogg)

And thus the imagination feeds.