Arcee, and just about all the robots, seemed to have a concept of biological family units. Even Starscream had a concept of a family unit when he told Agent Fowler that his family may grieve for him. Arcee seemed to have a concept of boy/girl love relationships. And when Raf asked the Autobots who made them, both Ratchet and Bulkhead had annoyed looks on their faces. Ratchet responded sarcastically by saying, "Oh pleeeeese!" Arcee refers to Bumblebee as family and has a very close relationship with him. So it makes me wonder. In this series, are Transformers made, or are they born instead? It seemed to be that way in ROTF. If they are born, do they have siblings in the same manner as humans?