>>11170726>he was an inspiration for Yamaguchi.I don't think he ever mentioned something like that. His "inspiration" that I know of is a fellow Kaiyodo sculptor Hayami.
You might be mixing things up with Nightow, inventor of Revolver Joints who is a collector of American toys and has that manga panel talking about McFarlane. And the fact that because of McFarlane's advancement in PVC figures, it showed Kaiyodo new possibilities and started doing their own. And Yamaguchi was a big player in their success.
So in a chain of associations way, maybe?. But like I'm not sure if Yamaguchi is aware of McFarlane and Spawn, like he connects the toy maker to the comic character and such. His interests are usually domestic in nature. Who knows there might be an article where he talks about it.