2012 (ICHIBAN TOYS SET)
MATERIALS: 93 LEGO pieces
DESIGNER'S COMMENTS: The Bat has an angled dual rotor system underneath where the blades intersect each other's paths. Figuring out the technical stuff for that was the first challenge - not just the overlapping blades, but also keeping them synchronized at different angles. Although I figured out a system, it was too large to make a feasible kit from. So I then made a miniature Bat as seen here.