Back in 1979, there was Newton... the land drone and faithful companion! Invented by Steve Hodges, a serial entrepeneur here in Boise, Idaho (where I live). Steve just recently sold M2M, an irrigation communications company for $33.3 Mil.
Now all we need to do is get him interested in flying robots!
Check out the youtube video of Newton from 1979... it's super cheesy yet admittedly ahead of its time!