Carl Banks was a commercial transport passenger in the 24th century.
In 2328, the SS Kogin ferried him from Planet Q to Tarsas IV. His special accommodation was a transfer via Astral Queen.
His passenger manifest was accessed by Lieutenant Commander Data aboard the USS Enterprise-D in 2370 by reviewing this data in the commercial transport database. (TNG: "Inheritance", okudagram)
This character was only mentioned in writing.
He was named for stand-in Debbie David, formerly known by that name.