“Dr. Hooves, also known as Dr. Whooves or Time Turner, is a background male Earth pony with an hourglass cutie mark. The character, unnamed in the show, was given the name “Doctor Whooves” by fans (as a reference to the British sci-fi drama Doctor Who, created by the BBC), which was adopted by the show’s crew,[7] and only later was the character explicitly given the name “Time Turner”.”
Friendship Is Magic Wiki: Dr. Hooves
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Our Version of Doctor Whooves
Virtual Brush Box 
Oh Good Grief!
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