In a scenario of jets and robots here are six(6) players, present as both humanoid mechaniforms and aircraft transitforms.
There are several options for these download DIY kits in sets of three(3), two sets of robots, sets of jets, collections of robots or jets, or the grand total collection of all types in both forms. Also each include blank uncolored versions for customization.
Finished builds are 10cm(4 inch) tall and 11cm(4½ inch) long.
For best results you will need to print the parts sheet pages on to 65LB (176 GSM) or heavier cardstock paper, deboss(indent) to pre-crease, cut with an appropriate tool, fold, and glue with your preferred adhesive for paper.
Print on cardstock and get tools out, this is constructive entertainment.
The ZIP files containing the ready-to-print PDF files are awaiting your purchase.
LEVEL-2: simple enough for most builders, mildly complex parts, easy to build.