The Door

The Door is an object from the Charlie the Unicorn series.

Charlie the Unicorn 3
The blue and pink unicorns tell Charlie that they must pass the door in order to get to the snowman. They go on to say that it is "everything, all that once was and all that will be, [it] controls time and space, love and death, [it] can see into your mind, [it] can see into your soul" before implying that it was all a simply joke.

Charlie the Unicorn Dating simulator
The Door is one of the characters Charlie can date in the Charlie the Unicorn Dating Simulator.

Trivia

 * The Door has a card in the Ten Million Years Filmcow Wars card game, it can be any color and is worth 4 points if you are the player who ends the game.