In the book, Lampwick is the one who convinces Pinocchio to Pleasure Island. They both end up as donkeys, I don't remember where both of them go, but I know that Pinocchio is thrown into the ocean as getting a limp (I think he was in the circus...) and is eaten up by fishes, and somehow becomes a puppet again. Lampwick, I think, goes to a farm(?) and dies from exhaustion...