MLP:FIM The Pegasisters guide book

ch22: Doctor whooves

Dr. Hooves, also known as Dr. Whooves or Time Turner, is a background Earth pony with an hourglass cutie mark. The character was given the name Doctor Whooves by fans (as a reference to the sci-fi drama Doctor Who, created by the BBC), which was adopted by the show's crew,[4] and only later was the character explicitly given the name "Time Turner", chosen by Enterplay consultant Wendy E.,[5] in Enterplay's 2012 set of trading cards and with different punctuation on a 2012 IDW comic book cover; Gameloft's 2012 mobile game initially also gave him the name "Time Turner", but a 2013 update changed his in-game name to "Dr. Hooves", a name that has also been given to him in Mighty Fine's merchandise[6] following the 2012 rejection of the original name "Doctor Whooves".[7] Hasbro acknowledged the character's popularity in the Comic Con 2011 promotional poster, where he is explicitly posed in a way that his cutie mark is clearly visible.[8] Dr. Hooves shares his design with Meadow Song and Lucky Clover