I recently had one of those memories that comes out of nowhere of this toy pen I remember from growing up that looked like a bat and had red ink that moved around inside it as you wrote to look like it was sucking blood. In fact, I believe they were called "Bloodsuckers" or something similar and manufactured by Marchon. can anyone verify this? does anyone remember these? and can anyone possibly help me get on the right path to tracking one down? I haven't been able to find any info about them online anywhere. thanks. now, get to work!