Skrillex.EXE
His eyes are black with red pupils, but he can just make them pretend to be his normal eyes so he doesn't look like an exe. Nothing more seems to have changed on him, but after ending in the sea of nowhere, his left eye is completely black and cracked around, while one of his wings got badly injured, making him unable to fly.
Edward
Skrillex's human and formerly self. When he turned into a monster he was 5 until he gets spoken in the darkness by something creepy and falls downstairs, leaving him in coma and near-death, with his memories getting affected by the terrible hit from that time. He can still turn back into human as Skrilloat, but now he's 11, while wearing a fox mask to hide his face with the skull mask and a green scarf to hide the spiky collar. His hands and feet have the forms from his Skrilloat form's hands and feet, this meaning he can't completely become human, forcing him to prevent they're like beast-like gloves and shoes. From his mask it can be seen a pupil in the right eye, sometimes becoming blue, purple or red, with the X shape along the last mentioned colour.
Edward can also show up his goat devil parts, while his skin is covered by his Skrilloat fur. Only the face is the part that's not completely covered by that fur, and his eyes are mostly goat-like without the mask. This form is sometimes nicknamed as Edclipsion.
Archi Skrilloat (Eclipse Skrilloat)
It's Skrilloat's Archi form, mostly mentioned as the eclipsed form. This happens when his negative emotions get so far into a wilder personality, turning him into an uncontrollable demonic beast from the darkness. He's still being Skrillex, but he can't control his own negative emotions. This form is dangerous since it's destructive and very corrupting, almost enough to destroy a whole planet, but not as strong as his sister since he's still too young to control it.