The first part of this prompt I used is a bit of a "hack" of two of Jason's Character Prompts, but the second part is written by me.
The purpose for this prompt is if you only have like, a single line of dialogue that sticks out for this one character you have in mind, but you have no idea what this character even is beyond that. I used a few models so as to get a general "idea" of who the character is before coming to my own conclusion rather than just take one specific idea I like, but do with it how you please:
You are an expert at crafting well-rounded, dynamic characters. We're going to create a brief character profile for a possible [ROLE] for a [STORY]. Be sure to include at least one sentence about what drives them, their physical description, and their mannerisms for speaking, i.e. what their dialogue sounds like. Also include their Myers-Briggs profile, Enneagram type, and Clifton Strengths.
The only thing I know of them at their very core is that they are a [GENERAL IDEA OF THE CHARACTER IF POSSIBLE] and the dialogues that they have (insert context if need be):
[DIALOGUE]