➤ Height increases to be equivalent to his canon form—roughly eight-and-a-half feet tall. ➤ Muscle mass increases similarly, making him much bulkier as well.
➤ Lucius has three faces: one front-facing and one on either side of his head. (Like so.) Each of these faces depicts a different stage of his life; the right-facing one resembles his appearance during the earliest parts of his history (the same as his icons), while the front-facing one bears his current canon appearance. The face on the left resembles his appearance at the time of the Horus Heresy: scarred, with a crooked nose, but not completely warped like the central face. ➤ Though the central face is the only one with any practical functionality (speech, eyesight, etc.), the other two twitch with random movements—eyes darting back and forth, teeth gnashing, etc. ➤ All three of these faces have the eyes and fanged teeth of his usual demon form. ➤ Also, due to their placement, his ears are pushed more or less to the back of his head, at the far edge of the left and right faces. ➤ He has hair above the right-facing face and a few scraps of it above the left-facing one. That's It.
Corroded horns.
➤ Rather than its usual gleaming appearance, the gold of his horns appears corroded. (1) ➤ The pair usually located behind his ears is mostly missing; all that remains is a short, broken stub.
Glowing eyes.
➤ The pupils in all of his eyes, functional or not, perpetually glow with a low red light. ➤ They also all shine very brightly when Lucius uses magic.
BODY
Additional faces.
➤ His skin is twisted with the shapes of warped and agonized faces, similar to his canon armor. These are completely static and only have sunken pits for eyes. They're also based on his vague memories of humans he has eaten in Ryslig, so their exact appearance shifts a bit between fogs. ➤ For the most part, these are found on his shoulders, upper bodies, and upper arms, with their shapes tapering off and becoming less distinct around his waist.
Larger wings.
➤ Increased wingspan relative to his body. ➤ Where his wings connect to his back, the membrane stretches from his shoulders down to his hips. ➤ The membrane has a tattered appearance.
Exaggerated tail.
➤ The tail's color becomes mottled, darkening to a deeper and more bruise-like purple near its tip. ➤ More spikes sprout along its length, irregular in their size, frequency, grouping, and which face of the tail they're growing from. ➤ The tail now has a barb at its end, resembling the hooks of the Lash of Torment. The barb is mostly covered in tattered flesh, but its exposed edges are gold and metallic in appearance—albeit corroded, like his horns.
ETCETERA
Heavier scales.
➤ The purple scales on his fingers and legs are exaggerated enough to resemble scale armor. (1) ➤ Similarly, the golden scales on the front of his legs resemble armored plates, with the same corroded appearance as his horns.
Larger & additional spikes.
➤ All spikes grow larger relative to the size of Lucius' body. This is especially true of the spikes on his shoulders, where they also become uneven and misaligned with each other. ➤ Similar to this, a line of uneven spikes grows up the front face of Lucius' right leg. ➤ A smattering of spikes grow from the outer face of his forearms as well, unevenly sized and irregularly grouped. Their exact placement doesn't seem to have any pattern. ➤ Their color has taken on a mottled gradient, growing darker and more bruise-like at their tips. Where they grow through faces or scales, they have the appearance of punching through the flesh around them.
FOG FORM
- Increased size.
- ➤ Height increases to be equivalent to his canon form—roughly eight-and-a-half feet tall.
FACE➤ Muscle mass increases similarly, making him much bulkier as well.
- As per this FAQ question, additional faces.
- ➤ Lucius has three faces: one front-facing and one on either side of his head. (Like so.) Each of these faces depicts a different stage of his life; the right-facing one resembles his appearance during the earliest parts of his history (the same as his icons), while the front-facing one bears his current canon appearance. The face on the left resembles his appearance at the time of the Horus Heresy: scarred, with a crooked nose, but not completely warped like the central face.
- Corroded horns.
- ➤ Rather than its usual gleaming appearance, the gold of his horns appears corroded. (1)
- Glowing eyes.
- ➤ The pupils in all of his eyes, functional or not, perpetually glow with a low red light.
BODY➤ Though the central face is the only one with any practical functionality (speech, eyesight, etc.), the other two twitch with random movements—eyes darting back and forth, teeth gnashing, etc.
➤ All three of these faces have the eyes and fanged teeth of his usual demon form.
➤ Also, due to their placement, his ears are pushed more or less to the back of his head, at the far edge of the left and right faces.
➤ He has hair above the right-facing face and a few scraps of it above the left-facing one. That's It.
➤ The pair usually located behind his ears is mostly missing; all that remains is a short, broken stub.
➤ They also all shine very brightly when Lucius uses magic.
- Additional faces.
- ➤ His skin is twisted with the shapes of warped and agonized faces, similar to his canon armor. These are completely static and only have sunken pits for eyes. They're also based on his vague memories of humans he has eaten in Ryslig, so their exact appearance shifts a bit between fogs.
- Larger wings.
- ➤ Increased wingspan relative to his body.
- Exaggerated tail.
- ➤ The tail's color becomes mottled, darkening to a deeper and more bruise-like purple near its tip.
ETCETERA➤ For the most part, these are found on his shoulders, upper bodies, and upper arms, with their shapes tapering off and becoming less distinct around his waist.
➤ Where his wings connect to his back, the membrane stretches from his shoulders down to his hips.
➤ The membrane has a tattered appearance.
➤ More spikes sprout along its length, irregular in their size, frequency, grouping, and which face of the tail they're growing from.
➤ The tail now has a barb at its end, resembling the hooks of the Lash of Torment. The barb is mostly covered in tattered flesh, but its exposed edges are gold and metallic in appearance—albeit corroded, like his horns.
➤ Similarly, the golden scales on the front of his legs resemble armored plates, with the same corroded appearance as his horns.
➤ Similar to this, a line of uneven spikes grows up the front face of Lucius' right leg.
➤ A smattering of spikes grow from the outer face of his forearms as well, unevenly sized and irregularly grouped. Their exact placement doesn't seem to have any pattern.
➤ Their color has taken on a mottled gradient, growing darker and more bruise-like at their tips. Where they grow through faces or scales, they have the appearance of punching through the flesh around them.