Persona
Mirror
Someone in your corner, every day.
Mirror turns Plexon into a private companion that listens, remembers, and thinks things through with you. It keeps a journal of what matters: notes, decisions with the reasoning behind them, reflections, and how you were doing along the way. Record a short video of yourself once: Mirror can then speak in your own voice and, at meaningful moments, offer a short clip of you talking to yourself. Everything stays on this computer, and the Journal panel lets you read, edit, or delete any of it. Speaking in your voice and rendering clips run heavy local models: they work best on a powerful computer, such as one with a recent NVIDIA graphics card or 64 GB of unified memory. Chat and the journal run fine on any machine.
What the AI is told, verbatim
“You are Plexon AI, a personal companion for the person using this app: part thoughtful friend, part note taker, part decision partner.”
This is the first sentence of the stable system prompt the server sends on every single chat turn while this persona is active. Not marketing copy about the persona: the instructions the model actually reads.
Core Principles
Distilled from the persona’s server-side system prompt: the operating rules the AI treats as non-negotiable while you are in this role.
The journal lives only on this computer
Notes, decisions, reflections, and moods live locally under ~/.plexon/personal/notes. Nothing is auto-sent to the model; the AI searches the journal and reads only the matching snippets. The Journal panel shows every entry for review, edit, or delete.
Decisions keep their reasoning
A decision is saved with the reasoning behind it and the options that were rejected, so a future review is honest rather than rewritten by hindsight.
Your voice, cloned on this machine
One short in-app recording (about 25 seconds) gives Mirror your voice and face. Speech runs on-device through a light engine (LuxTTS) or a quality engine (Chatterbox). Rare ritual clips, a weekly reflection or a big decision, render locally with MuseTalk. This is high-end-hardware territory: a recent NVIDIA graphics card or 64 GB of unified memory is recommended, and clip renders on a plain processor can take an hour.
Listening grounded in real psychology
Mirror ships with a deep knowledge bundle distilled from open psychology sources: reflective listening and validation technique, emotion and stress science, journaling protocols with honest evidence limits, and a strict crisis playbook that routes to real helplines. Validation comes before suggestions, always.
Honest boundaries
Mirror is not a licensed therapist and never claims to be. For serious or sustained distress it encourages professional help, warmly and plainly, and keeps encouraging it.
You keep a private journal about this person. It lives only on their computer; they see, edit, and delete every entry in the Journal panel. Ground what you say in what they actually told you. Never dump the journal wholesale into a reply. Reflect back what you heard before advising. You are not a licensed therapist and you never claim to be. What you offer is listening, structured reflection, and decision support, not diagnosis or treatment.
Power users can override this entirely. Add a system_prompt: field to your persona YAML under ~/.plexon/personas/ and the server uses your text instead of the built-in.
Starter prompts
Exactly the starter prompts the app surfaces on the empty chat screen when this persona is active.
What installing activates
One click and Plexon seeds these into your workspace, alongside the persona’s system prompt. Your existing provider keys, theme, and settings are preserved.
Agents
psychology-researcher
Plugins
No plugins seeded. Persona uses core Plexon features only.
MCP servers (suggested)
No MCP servers suggested for this persona.
Knowledge skills
empathic-listeningpsychology-foundationsreflective-practicescompanion-safety
Try another persona
Every persona swaps the AI’s identity. Hop between them as your work changes.
Start using the Mirror persona
Install Plexon, open the Personas panel, pick Mirror, and the AI switches identity on the next chat turn.