Variations can mean FOUR different things here:|
1) TFs in these countries are recolors/remolds of TFs traditionally considered 'American', either just before or just after their release in the states (example: Metrotitan, Black Zarak, SoundBlaster).
2) TFs in foriegn countries are variations WITHIN their own country. That is, you would find a Transformer exclusive to another country that had variations (example: Actionmaster Bombshell).
3) TFs in foriegn countries are variations within OTHER countries. Like #2 above, but different in that the toys never made it to American shores, but did make it to some other foriegn country (example: Road Ceaser, Overlord).
4) TFs in these countries (usually Japan) are actually part of a pre (or post) Transformer line of robots (Microman, Diaclone, Brave, etc.).
For help in translating foriegn Transformer webpages and text, I recommend using these translator resourses.
For a crash-course in understanding the Japanese-language as it relates to TFs, go here.
Now that that's out of the way...