Star Tracker

Star Tracker is a male Earth pony with a phthalo blue coat, light gold mane with very pale apple green streaks, brilliant azure eyes, and a cutie mark of a gold star and three yellow horseshoes. He appears in the season seven episode Once Upon a Zeppelin as a passenger on Iron Will's Cruise of the Princesses Experience and the winner of a raffle to spend a day with Twilight Sparkle.

Design
Star Tracker shares his body type with Sandbar and young Burnt Oak.

Depiction in the series
Star Tracker appears in the episode Once Upon a Zeppelin and is depicted as an eager but shy stallion who frequently gets in Twilight's personal space. As part of the cruise's grand prize raffle, a colt named Star Tracker wins a day of being an honorary member of Twilight's family, which he is endearingly delighted about and constantly has a nervous grin on his face.

Throughout the day, Star Tracker trails along with Twilight, sometimes uncomfortably close, as she does different exhausting princess-themed activities, from officiating the paddle boat race instead of racing against Shining Armor, having an Alicorn Q&A session instead of barrel jumping down Neighagra Falls with her mother and signing autographs for the cruise attendees instead of watching the Northern Stars with her family, who had watched them without her. Twilight then breaks out in tears before prominently exploding in anger and yelling at a frightened Star Tracker for standing so close to her that she accidentally stepped hard on his hoof.

Later on, after a talk with Cadance about where to draw the line, she goes back in the Sparkle family cabin to say that she should've asserted a desire to do the things she wanted sooner, and she apologizes to Star Tracker for lashing out at him. Star Tracker, Twilight and her family then enjoy ice cream at the front of the deck, something completely off the schedule, to everypony's surprise. Star Tracker thanks Twilight's family for including him in their activities and saying that he's glad that he met Twilight, and Twilight then hugs him. When Iron Will announces ice cream with Princess Twilight to the other cruise attendees, Star Tracker stands up for Twilight and tells him to leave her alone.

Quotes
"Twilight is my favorite time of day. [laughs] And it's also your name. [laughs] So I just thought that was cool."

- Once Upon a Zeppelin "[nervous] I'm gonna write about this race tonight in my journal! [nervous noises] It's just so exciting!"

- Once Upon a Zeppelin "Themed photoshoots are the best. [nervous noise]"

- Once Upon a Zeppelin "Who are you?"

- After Twilight suggests something off the schedule in Once Upon a Zeppelin "You and your family have been really kind to include me, but you deserve your own vacation together. [laughs nervously] And I'm really glad we met, too!"

- Once Upon a Zeppelin "Oh, no! Leave the princess alone!"

- Defending Twilight from Iron Will in Once Upon a Zeppelin