Here in the UK we had an odd introduction to Zoids. As well as the classic TOMY toys, in the 80s we also had specific mythos created for us in the pages of the “Spider-Man and Zoids” comic. It was also the first time I encountered Grant Morrison’s writing, as he wrote some of the Zoids strip.
TOMY made a concerted effort to relaunch the line in the late nineties, and this is the second anime series in support of that (99’s Chaotic Century being the first). However New Century Zero was the first to be dubbed into English and show in the West as Zoids/ZERO.
As they later dubbed other Zoids series, presumably they had some success, but like the 80s launch I don’t think it exactly set the world on fire the way Transformers did.