Senecio draws in influences from several artistic cultures, including Africa in the way in which the old man's face is constructed.
Klee uses geometric shapes to create this portrait, in a similar way to that of his Castle and Sun cityscape. Triangles and rectangles mingle together to form the overall look.
In Senecio, triangles produce eyebrows for the old man, whilst squares build up his neck and cheeks. Yellows and whites are again used to draw the eye to key points of the painting, whilst reddish browns are used to complete the background.
Senecio himself was a performer who is depicted in this artwork. It also links drama, theatre and painting together in a way which was common during this period of art history, particularly within the Bauhaus movement and Abstract Expressionists.