I've just 'upgraded' the LEGO Ninjago guide entries for Krazi, Frackjaw, and Zane. The pictures are now of the figures we had in hand with 360 views and head shots.
Only two more entries to go before we have all minifigs from the series to date.
On a separate but related note, I did find out that the skeleton arms differ between those figures that appear in regular sets as opposed to spinners. There is no 'twist' to the hand clip so the hands open to the side. This is likely done to allow the spinner skeletons to hold weapons out instead of up and down. The angle of the arm bend is also closer to 90 degrees. Just something to consider when looking to buy the skeleton figures.
You can see the updated guides here.