๐ง๐ฟ represents person: dark skin tone, usually shown as a front-facing person with short hair and dark skin.
This usually means referring to an individual, oneself, or a human being in a general context.
For example, people use it in chat for 'I will be there ๐ง๐ฟ' or when describing a general person in a story. It also fits social media bios and personal status updates to represent one's own presence.