In the rapidly evolving digital landscape, the convergence of virtual characters and interactive experiences is becoming increasingly prevalent. Persona Engine emerges as a comprehensive toolkit integrating Live2D, **Large Language Models (LLM), Automatic Speech Recognition (ASR), Text-to-Speech (TTS)**, and **Real-time Voice Cloning (RVC)**, offering users a seamless solution for creating vibrant and interactive digital characters. This engine is particularly well-suited for VTubing.