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As far as I'm aware, France was a relative outlier in Europe in regards to popularity of Japanese media with it preceding more widespread adoption in popular European culture.

Indeed, Mazinger was an household name in Italy even earlier than that.

There's also Alfred Jodokus Kwak by Herman van Veen, Akira Miyazaki and Hiroshi Saitō from '89, which was redubbed in many languages.

[0]: https://en.m.wikipedia.org/wiki/Alfred_J._Kwak