oh!! i don't know if anyone has mentioned this, but i feel like Freaking Out shows that lewis's "true" form is the humanoid one? when the petals touch the locket in the beginning and lewis reforms, he's in his "human" form, not the skeleghost form. and when the trio's shown with their flowers, lewis looks like a human with glowing irises and dark sclera, which i'm p sure is his true form? idk, wanted to mention this since before FO people were half-and-half on whether his human or skeleghost
(cont.) appearance was his true form, with the other being a consciously maintained guise.
Aw true I guess that sorta is confirmed or at least very heavily supported now.
Thats personally what I always figured. (not counting my ādeath formā headcanon, I never figured that would be canon cause that would be a bit gory for the tone of MSA)Since at the end of ghost he reverts to that when no one else is around.