Accidentally posted in the wrong section: fixed now.
DISCLAIMER: I am not a LEGO purist, and I occasionally collect knockoff sets. This does not mean I do not support LEGO.
I found these small sets at a local store earlier this year. I prefer Bionicle over Hero Factory, but these were too interesting to pass up. I ended up buying a few of them, and these are my thoughts.
To start, they are packaged pre-built, and their parts are considerably smaller than official CCBS parts. The sets appear to be ripping off Stormer XL and Core Hunter, and the boxes call the series "Earth Heroes".
Here is the back of one of the boxes. The back shows official combination models and some interesting text.
The sets are really disappointing out of the box. The plastic quality is horrible, and there are obvious inaccuracies when compared to the sets they are ripping off.
Core Hunter's helmet appears to have been molded in white then painted black.
Something else worth mentioning is that Core Hunter's chest armor has the HF logo printed on it.
Here is a size comparison. The Earth Tutelary figure in the middle is the same size as a regular HF 2.0 set, And the Final Fighter to the right is around the size of a Bionicle G2 figure.
In conclusion, I haven't seen any Hero Factory knockoffs quite like these on the internet. The sets have some compatibility issues with official LEGO parts, but it's workable. I would definitely NOT recommend buying these since the plastic quality and paint applications are horrible. Overall interesting knockoffs though.