The Predacon Chro has a sort of quasi-existence in the Beast Machines toyline. He is technically a redeco of Rav, a Maximal Deployer . The Deployers all came in two different color schemes as the toyline progressed, and Rav was available in both red and blue. The blue Rav would later be identified in tie-in fiction as Chro. So there is no Chro toy, but rather a blue Rav figure that's understood to be Chro in storytelling. Blue Rav was available in 2000. He turns into a siege crossbow weapon.
An Online Amateur Sketchpad