A librarian or, rather, a holographic version of one.
You may not know this, Moset, but our Doctor on Voyager created a holographic version of you.
This act activates a dormant program inside the Lexcorp mainframes, an holographic version of Luthor.
A holographic version of T'Pel is featured in "Body and Soul".
Odo finds that he can be comfortable with the holographic versions but is afraid to take the next step in real life.
He watches a holographic version of himself and his mother interact as she serves dinner.
The group rippled with laughter again, in time for me to see a small holographic version of myself, engaged in a vigorous dance.
Instead, Quark will use his skills with customers to display holographic versions of the weapons in the holosuites.
Characters ride in Duel Runners, whilst those without them use holographic versions.
"I think I played a holographic version of the story back at the Academy."