Shortie, Mr Powerball will need a a periscope to look over a 2 ft wall and will have a hard time going up-hill (gravity ...)Powerballs. I love it! After some consideration, I'm thinking Xepa must have been using speech to text or got autocorrected, and "a sphere" was actually intended to be "LFP here". Maybe?
bi-pedal multi-purpose humanoid is the best option. cheers!!