They really love that "super deformed cute" look for Transformers in Japan. Hell... it goes back to the bumpers on Transformers Victory back in 1989 from what I can tell. And the fans produce a lot of it as these sites show.
But then Trixter posted this image and I now realize I need to poke my eyes out.
I'm glad she posted that one link though. It had even more Japanese TF links from one of those old school web rings.