Cotton Cloudy is a Pegasusfilly with a white coat, light blue mane and tail, and lavender eyes. She has a cutie mark of either a blue cumulus cloud or a yellow archer's bow with nocked arrow, and sometimes she has no cutie mark at all. The show does not name her, but Gameloft's mobile game has listed her name in-game and included her in its files. Cotton Cloudy also shares her design with "Princess Erroria" and "Tornado Bolt".
7:05, 7:08 - playing on the swings with "Princess Erroria"; 7:23, 7:46 - admiring Apple Bloom's cutie mark; 8:28 ~ 10:19 - admiring Apple Bloom's loopty-hooping; 10:32 - next to "Dinky Doo"; 10:33 - next to "Berry Pinch"; 11:05 - looking surprised; 11:09, 11:19 - watching Apple Bloom spin plates; 11:41 ~ 12:24 - watching Apple Bloom's talents
0:06 - leaving Ponyville Schoolhouse; 0:16 - admiring Featherweight's cutie mark; 6:20 - reading the Foal Free Press; 6:39 - on the swings with "Dinky Doo"; 8:53 - on the playground with "Tornado Bolt"; 19:37 - reading the Foal Free Press; 20:53, 21:15, 21:18 - in the press room
2:55 - walking with "Dinky Doo"; 3:02, 3:04, 3:40 - watching Diamond Tiara's display; 4:16 - in Sweetie Belle's fantasy; 8:19 ~ 9:19, 12:57 - admiring the Cutie Mark Crusaders; 10:03 - hiding with other foals in the bushes; 11:24 - watching Twilight from outside the Hay Burger; 11:54 ~ 12:19, 15:44, 16:01 - admiring Twilight Sparkle; 13:20, 13:44 - catering to the Crusaders; 14:19 - outside Diamond Tiara's front gate; 14:46 ~ 15:35 - part of an angry mob of foals; 16:56 ~ 18:17 - with Twilight and other foals in the Golden Oak Library
While she doesn't appear as a character in Gameloft's mobile game, her fan-given name was listed in-game in a partial list of characters that could be won from the Balloon Pop minigame, shown shortly after the Canterlot update, and the game's files include two character model files with the string "cottoncloudy" in their names as well as a quest menu icon depicting her. The character did not appear in-game because of "a problem with character naming".