or "Mandi".

( Flapjack I spay a little mare for you, Wed 10 Jun 2009, 16:02, archived)

I think just
"Arachnoknight" would be superb.

Or the even more pompous "Arachnobaron"
( Goatworrier had your mum and she was shit, Wed 10 Jun 2009, 16:06, archived)

arachnoviceroy

( manolith hooray for me, Wed 10 Jun 2009, 16:08, archived)