'It's Morphin Time' is the transformation command from Mighty Morphin Power Rangers, the American superhero series that premiered in 1993 and adapted footage from Japan's Super Sentai franchise. The team leader would call the phrase before the Rangers morphed into their colored suits, and it became one of the show's most quoted lines. Clips named for fans like The Billy Lee keep circulating on soundboards because the call is short, nostalgic and instantly signals a change, which suits memes, edits and reaction videos decades later.