What do you think some of the Transformers's did back on Cybertron before it was destroyed? This one sounds fairly random, but I think Bumblebee was a Welder. It kind of makes sense. His battle mask looks quite a bit like a welding mask, doesn't it? Also, since Transformers can intigrate weapons into their body, why not include tools? His cannon does look like a welding tool. Anyways, what do you think the other TF's did?