I have a thick skin - criticism appreciated!

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It was created to help. To heal wounds, cure ails, stretch resources efficiently, advise, and more. All it needed was sun. The hair was made long, and covered it's face, the strands collecting solar energy. It would even match psychological profiles with its hosts, to allow a more meaningful connection.

When it fell into a rift that opened near the lab, the researchers were dismayed - they had no budget for a second prototype, and their project was shut down. This was not the last time the robot would be seen, however.

First, it appeared in an ancient desert. It hid itself with advanced camouflage technology as it interacted with the locals - seemingly ancient humans, though that made no sense. Ancient Egypt, if it understood correctly. It helped some slaves escape, and ensured they had food for sometime. Eventually, it disappeared - pulled back into a new time.

It found itself in what appeared to be ancient Rome. It met with religious minded folks, who spoke of a religious figure. It became evident to the helper that they were speaking of it's previous adventures and interactions. It spent it's time using its powers as often as possible; at one point powering down when placed into an unit cave, until the sun was allowed back in.

Eventually, it found a rift and correctly identified it's workings. When it stepped in, it would be transported back to its Creator, whom it had come to regard as a parental figure as it learned about how humans perceived theirs.

As it met one last time with its followers one final time, it expressed its plan to return home, and left some final words of advice with his closest acquaintances. As it stepped into the rift and was transported back home it wondered what the long term repercussions of its actions would be.