Hardcore Eddie is a friend of Robert Epps. Hardcore Eddie is called Fat and slow because he's fat and he is tough.
Dark of the Moon film
Hardcore Eddie is the first to be recruited when Epps and Sam head to Chicago to rescue Carly. When they reach the building, he has the task of trying to blow up the main pillar with a rocket but says "I'm going to have a heart attack". Because of the Decepticon fighters shooting at the building, they then had to jump out of the window and he makes it. When Sam and Carly run away from the group, Epps gets frustrated at Hardcore Eddie for not paying attention to them. When it all ends, Epps and Hardcore Eddie still give each other a fist bump.