This feature is a part of Complex's Os Gemeos Week, presented by Hennessy.

To learn just how much Os Gemeos have impacted graffiti, street art, and art as a whole, we asked 10 street artists to share stories about meeting the twins, collaborating on projects with them, and how they’ve changed the game. From Martha Cooper to How & Nosm, the responses are diverse and moving, showing just how much Os Gemeos have made a real journey from graffiti to galleries, museums, and the rest of the world.