The 7th Gem of Harmony

                        The Pony that the 7th Gem of Harmony chosen was Dante, a human being from another dimension who created the ship named D.A.T.R.G.I.S. or Dimension And Time Rift Generator In Space, for short Datrgis but of course with the help of his brother, he's not the one that created this ship, for he is the one that created the energy source of the ship to time and dimension travel to billions or trillions of dimensions,  so that he can go through multiple dimension, joining in on the adventures from the dimension he goes into, learning the powers they already knew and have, like Nen from Hunter X Hunter, Spiritual Energy from Bleach, and etc.

                In every story, and in every thought happens on another, that is why they wanted to create this ship, because Dante already hypothesize that in every story created by our mind or thought happens on another dimension.

                                And you ponies might be wondering, who is this 7th Gem of Harmony, well lets find out in Dante's Adventure of course...