Persona
Etymology
From Latin "persona," the mask worn by an actor in classical theater, which also gave us "person." The psychologist Carl Jung revived the theatrical sense, using "persona" for the social mask that mediates between the true self and the outer world.
noun · /pur-SOH-nuh/
The public face or role a person presents to the world, distinct from their inner self.
What it names
A handle for the curated self we perform in a given setting — onstage, online, or at the office.
Example
His warm on-air persona bore little resemblance to the guarded man off the microphone.
Related idea
A persona is the mask deliberately shown outward; a facade carries more suspicion — it implies the pleasant front is actively hiding something worse.