I knew it as Goldrake in my childhood in Italy and I love it above all other cartoons. Japanese animation was massive in Italy at the anime with all sorts themes from mechs like Goldrake, Gundam, Jeep Robot, Mazinga and Daitarn 3 or Captain Harlock to the weird and sinister like Bem to the sweet and romantic like Heidi and Lady Oscar. All massively popular. I would love to see a live action version of Goldrake but the japs are napping on this subject whilst Hollywood subjects us to imitations like Transformers and Pacific Rim for a perceived western audience.