6

6 (voiced by ????) is the artistic portion of the Scientist's personality. He sees things that the others in the group don't see. 6's fingers are made of ink pen nibs, which he uses to draw.

Trivia

 * 6 will be resurrected and revived by Princess Twilight Sparkle, Princess Sunset Shimmer and Trixie.
 * 6 along with 1, 2, 3 and 4, 5, 7, 8 and 9 became Princess Skyla's guardians.