William Du Bois Yaw Sakyi Kumi (born 5 May 1994), popularly known as Koo Kumi,[1] is a Ghanaian spoken word artist, photographer, slam poet and mixed media visual artist.

He studied visual arts in high school and was the best Graphic Design and Ceramic student of his class.

Trotro Vibes is a movement of artists who use public transport as a stage to start conversations with poetry, spoken word and acoustic music.

[12] He has also released a 10-track album titled 'The Griot' that tackles politics, urbanization and movement, culture, age of youth, and gender-related issues.

He appeared on it with Trotro Vibes in December 2016 and was featured on BBC through a mini documentary.