In the She-Ra season one episode "Small Problems" we are treated to one of the oddest appearances in the series. One of Skeletor's Hover Robots appears on Etheria, manufactured by the Evil Horde! Now those with a keen sense of vision will have noticed many moons ago that the head of a Horde Trooper is basically that of a Hover Robot. So it could be argued that a Hover Robot on Etheria is not really all that much of a surprise!
(click on the image to see it at full-size)