This is the Fleixpod: a 3D printed soft robot designed for dynamic locomotion. It is printed with flexible TPU. Its Gyroid infill produces soft & flexible structures. The legs are driven by geared servomotors. The soft body also protects the electronics. As you can see in the below video, this robot can overcome rugged terrain.
Boxi Xia, Jiaming Fu, Hongbo Zhu, Zhicheng Song, Yibo Jiang, and Hod Lipson from Columbia University are behind this cool robot.