---
base_model:
- Vortex5/Scarlet-Seraph-12B
- Delta-Vector/Rei-V3-KTO-12B
- Retreatcost/KansenSakura-Erosion-RP-12b
library_name: transformers
tags:
- mergekit
- merge
- roleplay
---
<section class="shell stellar-theme">

  <div class="title-frame">
    <div class="title-block wide">
      <h2 class="hero-title">Stellar-Umbra-12B</h2>
    </div>

  <div class="image-slot inset">
      <img src="https://cdn-uploads.huggingface.co/production/uploads/6669a3a617b838fda45637b8/kF-T8EPJ4xM3LcPxlDoYX.png">
    </div>
  </div>

  <div class="theme-divider"></div>


  <section class="pane blended">
    <h2 class="pane-title hover-glow">Overview<span class="underline"></span></h2>

<p>
  <strong>Stellar-Umbra-12B</strong> is created by merging  
  <a href="https://huggingface.co/Vortex5/Scarlet-Seraph-12B" target="_blank">Scarlet-Seraph-12B</a>,  
  <a href="https://huggingface.co/Retreatcost/KansenSakura-Erosion-RP-12b" target="_blank">KansenSakura-Erosion-RP-12B</a>, and  
  <a href="https://huggingface.co/Delta-Vector/Rei-V3-KTO-12B" target="_blank">Rei-V3-KTO-12B</a>  
  using a custom method.
</p>

<details class="expando nested" style="margin-top:12px;">
  <summary>Show YAML Config</summary>
  <pre>
models:
  - model: Vortex5/Scarlet-Seraph-12B
  - model: Retreatcost/KansenSakura-Erosion-RP-12b
  - model: Delta-Vector/Rei-V3-KTO-12B
merge_method: amsf
parameters:
  normalize: true
dtype: bfloat16
tokenizer:
  source: Vortex5/Scarlet-Seraph-12B
  </pre>
</details>
  </section>



  <section class="pane blended">
    <h2 class="pane-title hover-glow">Intended Use<span class="underline"></span></h2>

<div class="tagbox-row">

  <div class="tagbox">📕 Storytelling</div>
  <div class="tagbox">🎭 Roleplay</div>
  <div class="tagbox">✨ Creative Writing</div>

</div>
  </section>



  <section class="pane blended">
    <h2 class="pane-title hover-glow">Credits<span class="underline"></span></h2>
    <ul class="credits" style="list-style:none; padding-left:0; margin-left:0;">
      <li><strong><a href="https://huggingface.co/mradermacher" target="_blank">Team Mradermacher</a></strong> — Static &amp; imatrix quants</li>
      <li><strong><a href="https://huggingface.co/DeathGodlike" target="_blank">DeathGodlike</a></strong> — EXL3 quants</li>
      <li><strong><span style="color:#6aa0ff;">Original creators and model authors</span></strong></li>
    </ul>
  </section>

  <div class="theme-divider"></div>

</section>




<style>

.shell.stellar-theme {
  max-width: 1000px;
  margin: 40px auto;
  padding: 40px 24px;
  position: relative;

  background: radial-gradient(
    circle at 45% 55%,
    #5ea2ff 0%,
    #4b2cff 22%,
    #2a0b57 55%,
    #0b0016 80%,
    #000000 100%
  );

  border: 4px solid #1b0f3a;
  border-radius: 16px;

  box-shadow:
    0 0 55px 22px rgba(10,0,25,0.80),
    0 0 110px 55px rgba(30,0,90,0.45),
    inset 0 0 45px rgba(80,20,200,0.35),
    inset 0 0 26px rgba(90,60,255,0.22),
    0 14px 30px rgba(0,0,40,0.55);

  color: #e8e8ff;
  font-family: "Cinzel", "Inter", serif;
  overflow: visible;
}

.title-block.wide {
  width: fit-content;
  margin: 0 auto;
  padding: 18px 44px;

  background: #000014;
  border: 3px solid #3b1c7a;

  box-shadow:
    0 0 10px rgba(0,0,0,0.7),
    inset 0 0 6px rgba(90,70,200,0.45);

  text-align: center;
}

@import url('https://fonts.googleapis.com/css2?family=UnifrakturCook:wght@700&display=swap');

.hero-title {
  margin: 0;
  font-weight: 700;
  font-family: "UnifrakturCook", serif; 
  font-size: clamp(2.4rem, 5.4vw, 3.5rem);  
  letter-spacing: 0.04em;

  color: #b7c6ff;

  transition: text-shadow 0.35s ease, color 0.35s ease;
}

.hero-title:hover {
  color: #e0e0ff;

  text-shadow:
    0 0 8px rgba(120,160,255,0.95),
    0 0 16px rgba(80,0,255,0.85),
    0 0 26px rgba(60,0,200,0.55),
    0 0 40px rgba(30,0,120,0.45);
}

.image-slot.inset img {
  display: block;
  margin: 24px auto;
  max-width: 94%;
  border-radius: 8px;

  border: 4px solid #3b1c7a;

  box-shadow:
    0 8px 30px rgba(20,0,60,0.55),
    inset 0 0 18px rgba(150,110,255,0.25),
    0 0 55px rgba(70,0,140,0.35);
}

.theme-divider {
  width: 92%;
  max-width: 880px;
  height: 18px;
  margin: 40px auto;

  background: linear-gradient(
      90deg,
      #6fa8ff 0%,
      #705bff 25%,
      #3c0f7e 50%,
      #705bff 75%,
      #6fa8ff 100%
  );

  background-image:
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.16) 0%, transparent 40%),
    radial-gradient(circle at 40% 40%, rgba(255,255,255,0.10) 0%, transparent 45%),
    radial-gradient(circle at 60% 60%, rgba(255,255,255,0.12) 0%, transparent 42%),
    radial-gradient(circle at 80% 50%, rgba(255,255,255,0.14) 0%, transparent 38%);

  background-blend-mode: screen;

  border-radius: 10px;

  box-shadow: none;
}

.pane.blended,
.pane {
  display: block;
  margin: 32px auto !important;

  width: 90%;
  max-width: 780px;
  padding: 34px;

  border-radius: 0px;

  border: 4px solid #341b69;

  background: linear-gradient(
      135deg,
      #0d0020 0%,
      #10002b 18%,
      #140034 40%,
      #180042 70%,
      #1c0050 100%
  );

  box-shadow:
    0 6px 20px rgba(0,0,0,0.55),
    inset 0 0 35px rgba(160,120,255,0.10),
    inset 0 0 14px rgba(200,150,255,0.08);

  color: #e8e8ff;
  font-size: 1.12rem;
  line-height: 1.65;
  letter-spacing: 0.01em;

  text-shadow:
    0 0 2px rgba(0,0,0,0.65),
    0 0 4px rgba(0,0,0,0.45);
}

.pane-title {
  font-family: "Cinzel Decorative", serif;
  font-weight: 800;
  font-size: 2.35rem;
  letter-spacing: 0.045em;

  color: #c6c9ff;
  padding-bottom: 16px;
  position: relative;

  transition: text-shadow 0.35s ease, color 0.35s ease;
}

.pane-title::before {
  content: "✦";
  margin-right: 12px;
  font-size: 1.35rem;
  color: #9ab6ff;
}

.pane-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;

  width: 100%;
  height: 3px;

  background: linear-gradient(
    to right,
    rgba(80,120,255,0.55),
    rgba(60,0,180,0.40),
    rgba(0,0,0,0)
  );
}

.pane-title:hover {
  color: #ffffff;

  text-shadow:
    0 0 6px rgba(120,160,255,0.90),
    0 0 14px rgba(70,0,255,0.85),
    0 0 26px rgba(50,0,160,0.55),
    0 0 40px rgba(30,0,120,0.45);
}

.tagbox {
    padding: 6px 12px;
    font-size: 1.05rem;
    font-family: 'Cinzel','Inter',serif;

    background: linear-gradient(
        135deg,
        #0f0035,
        #15004f,
        #20006a
    );

    border: 2px solid #341b69;

    color: #c8d1ff;
    text-shadow: 0 0 4px rgba(0,0,0,0.7);

    white-space: nowrap;
    text-align: center;

    box-shadow:
      0 0 8px rgba(0,0,0,0.55),
      inset 0 0 10px rgba(80,0,120,0.45);

    flex: 0 0 auto;
}

.tagbox-row {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 10px 0;
}

.shell pre {
  background: rgba(5,0,25,0.92);
  color: #dfe0ff;
  border-left: 4px solid rgba(110,80,255,0.8);
}

.shell a {
  color: #6ca4ff;
}
.shell a:hover {
  color: #a5c1ff;
  text-shadow: 0 0 12px rgba(120,160,255,1);
}

</style>