Again, from that same sketchbook -- this is yet another one of the drawings I did and sent off to Karl Aaronian at Playmates back when they were casting around for ideas for ways to expand the TMNT toy line in the 1980's and early 1990's.
I'm not sure why I combined the concepts of "mercenary" and "mouse" -- I suspect it probably had something to do with the alliteration. In any event, no "Mercenary Mouse" figure was ever made. I don't think the world is poorer for it. -- PL