I wouldn't say that's weird. Spiders can be interesting creatures. I love the story of Athene and Arachne in Greek mythology.
I am obsessed with Arthurian legend and, though there are a number of characters I like in the entwining stories, Merlin is one of my favourites. I like the old and wise wizard, so easily comparable to Professor Dumbledore in Harry Potter. Since I like the older versions of the names, I decided to go with Myrddin. I suppose technically I could have gone with Once_andFutureKing. But I only thought of that now.