Redab was a Bajoran Vedek who had passed away sometime before the 2371 Bajoran Gratitude Festival.
Quark sold commemorative latinum plated renewal scroll inscription pens during this festival, which he claimed had been blessed by Vedek Redab before his passing.
According to Quark, the pens were inscribed with, "Deep Space 9's Third Annual Gratitude Festival, today's date, and a lovely portrait of the station by Ermat Zimm." (DS9: "Fascination")
This character was only mentioned in dialogue.