Not gonna lie, seeing the 2nd edition box set with what I thought was a Robotech Destroid on the cover had me sold in an instant. It’s a complex game by modern standards but very solid, there’s only been a handful of changes to the core rules in 40 years.
I had some A3 posters of mech blueprints when I was a kid, but that’s the closest I got, apart from the odd model kit, but they could have been any Japanese robot/mecha mashup.