The crossword solution for the term 'DELTA's Follower' is ECHO, which is a four-letter word. ECHO is a figure from Greek mythology who was a nymph or mountain goddess. She was known for her ability to repeat back any sound made by another person. In the myth, ECHO was cursed by Hera so that she could only repeat what others said and could not speak for herself. This story has been used as a metaphor for how people often repeat what they hear without thinking for themselves.