This hybrid doesn’t have a lot of purpose, but is being used for research:
The idea is that it can walk on two legs, but when it comes across difficult terrain it can fly.
It doesn’t look like it can carry anything, and it would appear that this version does nothing a simple drone cannot do. I would expect a flying drone uses less power to travel the same distance.
Still, unique! And it can balance in precarious situations, so we might end up seeing rotors on ground-based robots one day to provide extra stability.