Why would an Autobot invent something like Kyubey? After all, I see him as the personification of evil and Optimus Prime as the "real" anime equivilent of Jesus.
You have just got to wonder WHAT the hell Wheeljack was on when he made that thing.
Now behold, everybody!!
This is my new invention.
It's name is...Incubator
Imitating the subtitle/logo of the Japanese dubbed version G1 Transformers."Emotion-Heat Quantity Converter!!"