Spike Witwicky

Spike Witwicky is the oldest (and sometimes only) son of Sparkplug Witwicky and the human friend of the Autobots.

Spike, like most Witwickys, has a tendency to form close bonds to the Autobots and become one of their main human allies. Cause let's face it, there are advantages when your best friend is a car (such as Bumblebee).