rpDungeon/Gemma-4-E4B-Luchador-Rudo

VISIONConcurrency Cost:1Model Size:7.9BQuant:FP8Ctx Length:32kTool Calling:SupportedPublished:Jun 1, 2026License:gemmaArchitecture:Transformer0.0K Cold

rpDungeon/Gemma-4-E4B-Luchador-Rudo is a 7.9 billion parameter Gemma 4-based model, effectively operating at 4 billion parameters, specifically fine-tuned for roleplay and creative writing. This model is a "heel" variant, featuring a rougher, more stylized character voice compared to its "técnico" counterpart, achieved through a six-adapter merge with a double dose of Spring Dragon and psycet character data. It maintains strong instruction-following capabilities while excelling at driving scenes and committing to character beats in narrative generation.

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Overview

Gemma-4-E4B-Luchador-Rudo is a 7.9 billion parameter model, effectively scaled to 4 billion parameters, built on the google/gemma-4-E4B-it base. Developed by rpDungeon, this model is a specialized variant designed for roleplay and creative writing, characterized by a "rougher, louder, Spring-Dragon-forward fuel" and a more stylized "heel" voice compared to its sibling, the original Luchador.

Key Capabilities & Features

  • Specialized for Roleplay: Engineered to drive scenes and commit to character beats, rather than narrate around them, especially when used with a system card.
  • Unique Merge Architecture: Utilizes a single-stage, six-adapter "all-in" merge, incorporating various fuel adapters including Marvin CPT/instruct, glimmer-b200, Spring Dragon, glimmer-conv, and psycet v2 CPT. This process includes a double dose of Spring Dragon and newer psycet character data.
  • Instruction-Following Preservation: Employs an SVD instruct-subspace mask and Fisher-importance + per-layer dampening during training and merging to preserve the base model's instruction-following capabilities, reporting only a ~0.93 pp loss in IFEval (strict-P) against the baseline.
  • Enhanced Restriction Adherence: Achieves 72.2% on Vampire restriction-adherence (canonical rubric), surpassing the original Luchador (66.7%).
  • Low Repetition: Exhibits a low rep-3gram score of 1.45.

Good For

  • Character-driven Roleplay: Excels at generating dynamic and committed character interactions.
  • Creative Writing: Ideal for scenarios requiring a distinct, stylized, and assertive narrative voice.
  • Narrative Generation: Suited for driving story beats and maintaining consistent character personas.

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