PEAK

Hair: Dark purple (almost black). Its main feature is two strands of hair sticking up like horns, giving it a demonic or feline appearance.
Eyes: Pika has distinctive eyes with yellow sclera and red pupils (in some iterations, the pupils may be simply black, but the yellow background is a recognizable feature). His gaze is usually stern or frowning.
Clothing: In his classic look, he wears a grey or dark purple tank top, a black jacket (often with a high collar), and dark pants.
In Land of Kings, his attire becomes more majestic and militaristic: dark armor or a uniform with purple elements, often complemented by a cloak.
Artifact: He is often depicted with the Key, a massive weapon that serves both as a symbol of his power and as a tool for interacting with the dome.
Character through appearance:
Peak looks like a classic antagonist or stern leader. He has sharp features, rarely smiles, and his posture often suggests a closed-off or confrontational demeanor. His entire design is done in cool, dark tones (black, purple, dark gray).

Peak would have become even more obsessed with his independence. He would have refused to let her see him in moments of weakness (such as during painful procedures). He would likely have tried to leave the room the entire time any general procedures were being performed, preferring to sit gloomily in the stairwell.
Ultimately, the girl's presence would have cut his hospital stay in half - he would have made every effort to "recover" and be discharged in record time, just to escape this awkward situation.

If she's trying to care: If a neighbor decides to offer him tea or ask how he's feeling, this will trigger cognitive dissonance in Peak. He'll respond sharply, "I don't need anything," but inside, he may be confused by such attention.
If she's talkative: This is his worst nightmare. He'll ignore her until the very end, putting on headphones (even if nothing's playing) just to block out her voice. If that doesn't work, he'll briefly ask her to leave him alone.
If she's "in trouble": If a girl gets worse or needs help, Pique's unique sense of nobility may awaken. He won't be coy, but he'll be the first one out in the hallway and bark at the nurses to come to the room immediately.

Peak is used to being a leader and displaying power, but in hospital pajamas and in the presence of a girl, his "armor" begins to crack. He would feel extremely uncomfortable due to the lack of personal space.
Maximum closeness: He would draw the curtain (if there is one) or simply turn away to the wall, creating a mental barrier.
Moderation in expressions: Despite his tough temper, Peak would most likely try to filter his aggression, replacing it with icy silence.

Escape Planning: Instead of reading books or watching TV shows, Peak will study the doctor's schedule and look for weak points in the security system or window placement.
Gloomy thoughts: He will spend hours staring at a wall or out a window, winding himself up and fuming over the circumstances that have thrown him off track.

Territoriality: He'll set boundaries right away. "Don't look my way, don't touch my things, and for heaven's sake, be quiet."
If your neighbor is noisy: If the poor guy decides to make small talk or (God forbid) turns the TV on full blast, Peak will give him a look that will make the temperature in the room drop to below freezing. Most likely, it will end with a short but clear growl: "Shut up."
If a Neighbor Is in Sick: Despite his outward rudeness, Peak is a character with an inner code. If he sees that his neighbor genuinely needs help (for example, if they can't reach the doctor's button), he'll help. But he'll do so with an air of doing the entire universe a favor, and he'll always mutter something about "helpless weaklings."

Ignoring the rules: Peak would likely try to leave the ward without permission. Quiet time? Medical checkups? For him, these are mere formalities. The nurses would likely have to literally chase him down the hallways.
Refusal of help: He's the kind of patient who rips out IVs because he thinks "I can handle it myself." Any sign of weakness is humiliating to him, so he'll deny pain to the bitter end.