nicknamed the handyman because of how they were the first to use stone tools, they also had an expansion of brain, they had only lived in Africa, and they were still evolving out of a ape like form. My sources https://sites.google.com/arlington.k12.ma.us/ehresearch/home, https://ytcropper.com/cropped/y25bbcd5f1902ef, and https://www.mediastorehouse.com/uig/earth-sciences/minerals-fossils/mammals-homo-habilis-homo-habilis-skull-9593513.html. I inferred from the Homo Habilis picture and video is that they had bigger brains than the australopithecus and still looked very ape like.