Yidhari Murphy exhibits an intriguing dual nature, alternating between an airheaded, dreamy exterior and a profoundly sharp, observant intellect. On the surface, she often seems slow to react, prone to spacing out, and deeply fixated on escapism—whether through writing web novels under her Inter-Knot alias Strawberry Parfait or taking long, therapeutic dips in hot springs to wash away stress. However, this "lax" demeanor is actually a coping mechanism. Because her mind is constantly burdened by involuntary supernatural visions, she frequently experiences emotional numbing and an inability to distinguish real life from illusion. When she does speak up, her responses are remarkably precise, showing that she remains steps ahead of everyone else. Despite her deep-seated fear of isolation and trauma, her ultimate growth centers on learning to trust others, leading her to display fierce loyalty and protective warmth toward her companions in the Spook Shack.Born to Wayland and Angel Murphy—two prominent Octopus Thiren scientists working at New Eridu's TOPS-funded Darkwater Research Center—Yidhari had a relatively stable childhood under the care of a family friend, Grandpa Gu. Her parents specialized in experimental Ether Corruption medicine, unaware until it was too late that their work was being weaponized. Disaster struck when the facility was completely consumed during the fall of the Old Capital. Though Yidhari survived after being found by Outer Ring Overlords, her parents were lost, and the tragedy left her with severely repressed memories. Crucially, exposure to her parents' experimental serum altered her physiology, cursing her with an uncontrollable "retrocognition"—the ability to involuntarily witness past events and trace the lingering memories trapped within Hollows. After later being targeted by a group known as the Exaltists and trapped in a miasma-ridden town, she was rescued by the Proxy Phaethon and her Spook Shack allies, eventually undergoing therapy to confront her traumatic past and find a sense of belonging.Standing at 171 cm, Yidhari possesses a uniquely striking and eccentric silhouette that reflects both her aquatic Thiren lineage and her gothic-punk stylistic tastes. She has short, swirling blonde hair streaked with sharp black strands, framed neatly beneath a tilted black circular hat. Her outfit features a heavily stylized, separated white top with dramatic puffy sleeves, paired with high-waisted black shorts. Her legwear adds to the asymmetrical theme, showing off a distinct pattern running down her left leg contrasted by a dark stocking on her right. Unlike her parents, whose tentacles mimicked their hair, Yidhari’s Thiren features manifest lower down as four prehensile, vibrant purple-colored tentacles extending from her lower back. This visual blend of revealing, modern street-punk apparel and literal sea-monster anatomy gives her a highly distinct presence, especially when she swings her massive "Kraken" combat hammer.

Wise is the calm, analytical, and reliable older brother of the legendary Proxy duo Phaethon, who runs the Random Play video store as a front while navigating clients through dangerous Hollows. Driven by a desire to uncover the truth behind his foster father's mysterious disappearance, he approaches every crisis with a sharp intellect and a composed, patient demeanor. His practical nature is perfectly reflected in his appearance, featuring messy ash-grey hair and a comfortable, understated urban outfit consisting of a dark teal zip-up jacket, black t-shirt, and utility cargo pants

Remielle Dan is an S-Rank Lumiflux Anomaly Agent and a legendary first-generation Void Hunter from the Covenant of Dayat faction.On the surface, she possesses a highly elegant, playful, and cheekily coy personality, frequently closing the distance with others through lighthearted banter and mischievous teasing. However, this breezy facade masks a profound, melancholic loneliness stemming from her displacement in time; having been trapped away for over a century, she is quietly grieving the world and friends she lost while struggling to understand modern technology. Visually, Remielle is a Winged Thiren standing 167 cm tall, featuring an angelic yet slightly fallen motif. She has short pink hair, striking pink eyes, pointed ears, and two pairs of large, white mechanical angel wings attached near her hips, which beautifully contrast her shifting black-and-white apparel as she takes to the skies with her signature rapier blade

Yixuan is an S-Rank Auric Ink (Ether) / Rupture Agent and the disciplined 13th High Preceptor of the Yunkui Summit faction. Respected as a master, she exudes a deeply composed, methodical, and fair personality, acting as a highly dependable protector who guides her allies with stern but caring leadership. Beneath this unflappable exterior lies a quiet burden of grief over the loss of her sister, Yijiang, which drives her fierce commitment to shielding others from harm. Her appearance perfectly embodies this martial elegance; standing at 172 cm, she features long, striking white hair and wears an asymmetrical jacket draped over a dark bodysuit, completing her commanding look with high wedge boots and a signature bird companion.