I totally agree with you!I hate names like Wooltchi, Leaftchi, Butterflytchi, Flowertchi... I hate American Bandai US horrible fake names!!! They are constrained and corny! It annoys me when someone uses these names! Well, I'm not saying they aren't allowed to use these names but it annoys me. Japanese names sound much much better!
And by they way, it seems that Robotchi is the Japanese name and Androtchi is the US name. I though it was Androtchi Japan and Robotchi US first too.
Oh, and believe it or not, I call Young Mametchi and Young Mimitchi and any other young character 'Yangu Mametchi' or 'Yangu Mimitchi', etc. This is because I think 'Young' in Japanese is 'Yangu', and I wish to stick to the Japanese names.