Dr. Finklestein wanted Sally to Stay, But she fed him nightshade and ran away. So his next creation had half his brain. Making her like him removed the strain. The scientist, Dr. Finklestein, is a genius who can make anything. He constructed Sally from some cloth rags and pieces of string. He resembles some kind of mutant duck. The top of his head is hinged. When thinking, he throws it open at will and scratches or tickles his brain. He scurries around in his motorized wheelchair. Although he is the creator of Sally, Dr. Finklestein is also her jailer. But despite his determination to hold her prisoner, he seems unable to stop her frequent escapes. But despite his determination to hold her prisoner, he seems unable to stop her frequent escapes. She repeatedly slips deadly nightshadeinto food, putting him into a deep sleep. After several of these excursions he made a female version of himelf, putting half of his brain in her skull. "Early on, I saw a drawing that someone had done," says Caroline Thompson. "It was of a scientist in a wheelchair with his head off, scrambling his own brains. I thought it was charming. I wanted Sally to have an obstacle between her and Jack that was visible as opposed to emotional. So I folded the Evil Scientist into the subplot." Jack goes to Dr.Finklestein to get equipment to scientificly investigate Christmas. When he decides to take over Christmas, he goes to the scientist to have him make the reindeer. Dr. Finklestein makes them out of some kind of metalic substance and animates them with electricity just like Dr. Frankenstine animated his monster. A delightful referencing in the similarity of the names Dr. Finklestein and Dr. Frankenstein, and also in the referencing of animating the inanimate using electricity. The Evil Scientist's lab, both outside and inside, suggests futuristic explorations and medieval mysteriesco-existing in a strange harmony.