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He is round and 3 feet tall. He has a panel where you can open him up to fix him. He has a scooper that scoops up regolith and puts it inside his round ball so that he can carry a lot to the moon base. The scooper has large sharp edges so it can dig down into the dirt. There are small wheels on his bottom which can move in every direction so that he can go around or over any obstacle. There are also mini-dust sweepers on the sides to dust dirt off the wheels so they do not get stuck. On the front, there are microphone eyes so that NASA can call out the direction he should go. Hubert has Velcro on the bottom so that you can lay a track of Velcro to the moon base and Hubert won’t accidentally fly away in less gravity.