My name is Ron Rementilla and I run Paperkraft.net to help guide people find the best free papercrafts on the web and promote the works of prominent and up-and-coming paper modelers, even the obscured ones.
If I'm not mistaken that is the pop-off panel for the tow-hook
Are those calendars the ones that have the Nendoroid Cycle papercraft?
I'm eons late in the figures game but I'm now hooked. Didn't really know anything about Nendoroids until I saw this post, my papercraft hauls will now regularly include them. Thanks Danny!