His poetry and short stories include dialect which and colloquialisms which give his primarily African American characters distinctive voices. Who is this?

The person being referred to is likely a writer or poet who incorporates dialect and colloquialisms in their work to portray the voices of primarily African American characters. Without specific details, it is difficult to determine the exact individual, but examples of such writers include Langston Hughes, Zora Neale Hurston, or James Baldwin.