Okay so I’m pretty sure it’s been thrown out there, but I have a theory to Double Dee’s beanie. And that’s cancer.I think he wears it to cover his hair lose from the chemo, that would be why he appears with little hair at the end of the game. It would also explain why he’s so skinny. Cancer messes with your eating habits and you start looking sickly. And last, it would explain his obsession with cleaning. If you have cancer, then you have a weak immune system.
Bonus: in regards to Ed asking Double Dee is it hurts when his hat gets pulled off in the movie(?), the Eds can know about Edd’s chemo, but Ed not being that smart might now know his hair loss is a result from chemo.
That is all. Let’s hear you’re guys theories :)