The phrase "indelible character" refers to a person's traits, qualities, or experiences that are so significant and memorable that they cannot be easily forgotten or erased from one's mind or memory. Full definition
Tough, irrepressible, funny, and warm, Astrid is one of the most indelible characters in recent fiction. (bookbrowse.com)
Wry, courtly, opinionated, and completely endearing, Major Pettigrew is one of the most indelible characters in contemporary fiction, and from the very first page of this remarkable novel he will steal your heart. (penguinrandomhouse.com)
Bottom Line: Lillian Hellman created indelible characters that actresses of substance will treasure forever. (ff2media.com)