Micolash, Host of the Nightmare, is a boss in Bloodborne encountered within the Nightmare of Mensis. Once headmaster of the School of Mensis, he led a forbidden order of scholars obsessed with attaining cosmic Insight and communing with the Great Ones. He wanders the dream-warped halls of his former academy with a tall iron birdcage fixed over his head.

LoRA recommended weight: 0.9-1.0

Main trigger:

Micolash, 
pale-skinned man, tall, slender to gaunt build
disheveled, messy dark hair (short to shoulder-length)
hollow, sunken, or piercing pale eyes

Cage on head:

tall cylindrical metal cage
cage rests heavily on the shoulders, fully encasing the head and upper neck
grid-like structure of horizontal and vertical bars

Clothes:

long, dark, flowing coat or cloak
deep reddish-brown, burgundy, or crimson inner lining
high-collared waistcoat
white dress shirt with cravat or loosely knotted ascot/tie
simple strapped sandals, leather boots, or dress shoes
light-colored gloves
overall silhouette: Victorian-era, formal, gothic-academic

Details and options:

tentacles: pale fleshy, glowing violet, or stark white tendrils emerging from sleeves, the cage itself, or the body
eye motifs: a single human eye suspended in a glass jar, detached eyeballs embedded in the robe's fabric, small floating eye-shaped symbols
magical energy: glowing orbs (blue, white, or purple), jagged spheres of crackling purple light
faceless variant with only a gray mass beneath the cage

Promt examples:

Micolash a man with a pale, gaunt face and a sinister grin is captured in a dramatic,  low-angle portrait against a blood-red sky. He is encased in a tall, cylindrical metal cage that rests over his head and shoulders,  obscuring his neck and the upper portion of his torso. He wears a dark,  tattered coat layered over a waistcoat,  suggesting a gothic or Victorian aesthetic. Both of his hands are extended outward toward the viewer,  with his left hand reached forward as if in a beckoning or commanding gesture,  revealing pale,  elongated fingers.

A digital illustration depicts Micolash a stylized male figure mid-stride against a solid,  muted gray background. The character wears a Victorian-inspired ensemble consisting of a dark brown pinstriped vest and trousers,  a tan collared coat with dark red trim,  and a white collared shirt underneath. His most prominent feature is an oversized,  cylindrical metal cage made of riveted iron bars that completely encases his head and upper neck,  topped with a sturdy-looking iron cap. Beneath the bottom rim of this heavy headgear,  the man’s face is visible,  showing a pale complexion,  disheveled dark hair,  and a weary,  slightly smug expression with droopy eyes.

A tall,  slender figure with a theatrical,  menacing posture dominates this stylized digital illustration. The character wears a dark,  multi-layered waistcoat and cape over pinstriped trousers,  with their head replaced by a tall,  rectangular cage made of dark,  riveted metal. Within the dark cage,  two glowing,  bright white eyes and a jagged,  grinning mouth are visible,  casting a faint blue light upward. Suspended in the air around the figure’s head are two small,  floating eyeballs on thin strings. 

Notes:

1. LoRA was created primarily to depict the cage on Micolash's head. Micolash's appearance in fan art varies greatly, and no screenshots from the game were used, so it's impossible to reproduce his canonical face. Therefore, the "Micolash" tag is largely useless.