Identifying and Mitigating Bottlenecks in Role-Playing Agents: A Systematic Study of Disentangling Character Profile Axes

arXiv:2601.04716 · cs.CL · Submitted 2026-01-08 · Read on arXiv

cs.CL

Submitted: 2026-01-08

Updated: 2026-08-31

Code: https://github.com/kwaroran/Risuai

Terminology

• Alignment — 29× in this paper · explained in 1 episode
• Fidelity — 22× in this paper · explained in 2 episodes
• Benchmark — 17× in this paper · explained in 2 episodes
• Consistency — 11× in this paper · explained in 3 episodes
• Ablation — 10× in this paper · explained in 1 episode
• Field-Aware Contrastive Decoding — 7× in this paper
• Transformer — 5× in this paper · explained in 2 episodes
• Embeddings — 4× in this paper · explained in 2 episodes
• Grounding — 4× in this paper · explained in 3 episodes
• Hallucination — 4× in this paper · explained in 3 episodes
• Adam — 3× in this paper · explained in 2 episodes
• Benchmarking — 3× in this paper · explained in 3 episodes
• Commentary — 3× in this paper · explained in 2 episodes
• Steering — 3× in this paper · explained in 2 episodes
• Ablation study — 2× in this paper · explained in 1 episode
• Actor — 2× in this paper · explained in 3 episodes
• Core — 2× in this paper · explained in 2 episodes
• Fine-Tuning — 2× in this paper · explained in 5 episodes
• Instruction Tuning — 2× in this paper · explained in 2 episodes
• Interpretability — 2× in this paper · explained in 15 episodes
• Large Language Model (LLM) — 2× in this paper · explained in 3 episodes
• While Large Language Model — 2× in this paper
• Elias — 1× in this paper · explained in 2 episodes
• Given-Circumstance Acting — 1× in this paper
• Knowledge Graph — 1× in this paper · explained in 7 episodes
• LLM-as-a-Judge — 1× in this paper · explained in 3 episodes
• Large Language Models (LLMs) — 1× in this paper · explained in 6 episodes
• Multi-agent Collaboration — 1× in this paper · explained in 2 episodes
• RAG — 1× in this paper · explained in 3 episodes
• Reinforcement Learning — 1× in this paper · explained in 4 episodes
• Resource Constraints — 1× in this paper · explained in 3 episodes
• Robustness — 1× in this paper · explained in 5 episodes
• Semantic Similarity — 1× in this paper · explained in 2 episodes
• Structural Constraints — 1× in this paper · explained in 2 episodes
• Sycophancy — 1× in this paper · explained in 4 episodes

Sources

• gpt-oss-120b & gpt-oss-20b Model Card
• Training a Helpful and Harmless Assistant with Reinforcement Learning from Human Feedback
• Examining Identity Drift in Conversations of LLM Agents
• Gemini 2.5: Pushing the Frontier with Advanced Reasoning, Multimodality, Long Context, and Next Generation Agentic Capabilities
• Steer Model beyond Assistant: Controlling System Prompt Strength via Contrastive Decoding
• Gemini Embedding: Generalizable Embeddings from Gemini
• LLM Agents in Interaction: Measuring Personality Consistency and Linguistic Alignment in Interacting Populations of Large Language Models
• ChatHaruhi: Reviving Anime Character in Reality via Large Language Model
• Does Prompt Formatting Have Any Impact on LLM Performance?
• Safety Tax: Safety Alignment Makes Your Large Reasoning Models Less Reasonable
• DeepSeek-V3.2: Pushing the Frontier of Open Large Language Models
• GPT-4o System Card
• Ministral 3
• Olmo 3
• PersonaGym: Evaluating Persona Agents and LLMs
• Qwen3 Technical Report
• OpenCharacter: Training Customizable Role-Playing LLMs with Large-Scale Synthetic Personas
• A Survey of Large Language Models

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