Daniel Witwicky is the human son of Spike and Carly Witwicky. He is approximately 12 years of age in 2005, and was presumably born sometime between 1990 and 1993. He is the grandson of Sparkplug Witwicky. Daniel often gets into trouble, which requires either his father or the Autobots to save him. He is very good friends with the Autobots, particularly Wheelie, Grimlock, and Hot Rod, but the one he's closest to is Arcee, who views him as a surrogate son. Come to think of it, he doesn't seem to have any human friends. What a shocker.. Daniel is (sometimes) the Headmaster partner to Arcee.