Unusual Mascot at Oboke Station

I was told by a coworker that this statue at Oboke Station has some sort of cultural reference; however, I cannot figure out what it is.

Nikon D600 with Nikon 85mm f/1.4 AI-S @ f5.6, ISO 100, 1/160 sec.

Oboke Gorge Sightseeing

While in Oboke, we indulged in a gentle 30-minute ride down the Yoshino River on a small sightseeing boat. Although the guide provided only spoke Japanese, there was plenty to see and enjoy. The scenery including sheer cliffs, exposed rock faces, bridges, clear water, usual rock formations and cormorants were all amazing.

Nikon D600 with Nikon 24mm f/2.0 Nikkor AI @ f8, ISO 100, 1/100 sec.

Nikon D600 with Nikon 24mm f/2.0 Nikkor AI @ f8, ISO 100, 1/40 sec.