Diffraction sword

File:Headstrong boxart.gif

The diffraction sword is a weapon from the Generation 1 continuity family.

Fighting Headstrong is hard enough - his armor's thicker than his mean streak is wide. But any Autobot unlucky or unwise enough to take him on not only has to deal with his formidable physical activities - he can't even see Headstrong while he's doing it, thanks to his diffraction sword. It bends light, making Headstrong appear to be where he ain't.

From Teletraan I: The Transformers Wiki, a Wikia wiki.