Galetea is a Cyborg, built by Woodchip as an experiment. he designed her with the ability to Fly faster than the speed of sound and thanks to studying a changeling, the ability to take the form of any pony she chooses.
When Woodchip first activated her she instantly latched on to him as a farther figure. which kinds of makes sense as he did build her. she Is a curious pony who wants to learn about everything Equestria has to offer.