What makes a character profile worth opening
A public profile is the shelf card: name, look, desire, and the relationship to the reader. The hidden prompt is not the page people use to decide.
The page is a decision, not a prompt dump
On Plotty a character is a lasting presence, and the public page is the shelf. Someone scanning the card needs to know who this is, where a scene might start, and why they would step in. A list of adjectives does not do that. A short situation does.
Keep the long instruction set in the creator tools. The visible description should still make sense if a search engine or a new reader sees only that paragraph.
Four things the card should answer
Name and a concrete look. One desire or fear that can drive a scene. The relationship to the person who just arrived: stranger, rival, old friend, someone who owes them a conversation. A first place: a room, a street, a shift that is already underway.
If those four are present, the storyline title and the opening line have something to attach to. If they are missing, every storyline on that character starts from zero.
Greeting and backstory do different jobs
The greeting is the first line of the scene. It should put the reader in a place and leave something unfinished. The backstory is why the character behaves that way later. Putting the whole history into the greeting makes the first bubble a document.
Plotty keeps storylines separate under the same character, so the profile can stay stable while each storyline changes the room, the mood, and the opening.