Gerson Boom is an elderly turtle and retired writer in Toby Fox's Deltarune, a character fans associate with warmth, wisdom and old stories. His short musical motif has become a recognisable shorthand for those qualities in fan edits, tributes and storybook-style videos, where a few gentle notes can signal a flashback or a quiet, heartfelt moment. Because the melody is simple and easy to recognise, creators reuse it across Deltarune fan content, keeping the character's calm, nostalgic presence alive long after his scenes end.