The TMNT: The Last Ronin short (created by speedokaggen) opens by showing viewers one of The Turtles in a dark, bloodied hallway.
The camera follows the turtle through the doorway to find him kneeling facing away from us.
We can now see the weapons and masks of all four brothers lain out in front of him.
It’s now revealed that he is donning a black mask, in mourning for his brothers and father.
“I miss my brothers so much,” he says.