In Joannes Malderus, Bishop of Antwerp, Anthony van Dyck presents a dignified portrait of the bishop. The painting features rich, deep colors, primarily warm tones of red and gold, which enhance the subject's regal appearance. Malderus is depicted in ornate ecclesiastical attire, complete with a mitre and a cross, symbolizing his religious authority.

The background is dark, allowing the figure to stand out prominently. The painting is executed in oil on canvas, a common medium for portraits during the Baroque period. Van Dyck's technique showcases his skill in rendering textures, particularly in the fabric of the bishop's garments and the sheen of the gold embroidery. The composition is balanced, with Malderus positioned centrally, drawing the viewer's attention directly to his face.

The use of chiaroscuro effectively highlights the contours of his features. Anthony van Dyck, a leading figure of the Baroque movement, painted this work around c. 1625. Known for his portraits of aristocracy and religious figures, Van Dyck's style is characterized by elegance and detail.

An interesting fact about this painting is that it reflects the artist's ability to convey the personality and status of his subjects through careful attention to their attire and expressions. This work is part of a broader tradition of portraiture that emphasizes the importance of individual identity in the Baroque era.