Wheeled bipedal robots are nothing new. These robots can move faster on even ground and are in general more agile than regular bipedal robots. This video shows a locomotion controller for wheeled bipedal robots that enables them to rotate while going up and down. They can also stay stable on an angled surface.
As you can see in this video, the robot can jump up a 20cm step.
[HT] [credit: C.-S. Hao]