Does your penguin falls apart when you hit play while the part is unanchored and in workspace? Also check if the humanoidrootpart cancollide is set to false. One more question. Did you start rigging you penguin from the humanrootpart first then to the torso and then from the torso to the legs, then torso to the wings, and then torso to head? Make sure to move the motor6d inside the penguin where they need to be at.