Marc Dennis strives for a "kind of psychological disquiet and nervous beauty" through his style of realism and numerous cerebral choices of subject matter. Dennis expresses complex themes of beauty, violence, power, fear and seduction, all of which are innately present in his overwhelmingly loaded images.

Ranging from small animals held in the palm of a hand, to life sized horses shown with veins bulging and nostrils flaring, Dennis broaches the concepts of familiarity as well as connotations that humans connect with the image of an animal.

In another series of explosions, he is all at once influenced by both real life footage of explosions, including those from war as well as Hollywood movies. Drawing on inspiration from Renaissance and Baroque religious paintings of themes such as; The Assumption of the Virgin, The Annunciation, or the Transfiguration, Dennis reinterprets the billowing divinely lit golden clouds surrounding the Virgin Mary and Christ to mimic the smoke and fire in explosions.

Seascapes, in a similar vein, represent powerful forces that can overwhelm the human experience, with both beauty and mystical power that reaches to the primordial existences of life. By painting an image in which something outside of the viewer's sight is attacking the sea, Dennis challenges the belief systems associated with the sea, and suggests that even something this seemingly untouchable can be disrupted.

Marc Dennis, in all his work, focuses on paradox, suggestion, emotion and beauty. His attention to detail and academic painting ability is not only a visual feat, but a metaphorical means to a conceptual end. Hidden beneath the visage of the real lies destruction, beauty, familiarity and infinite perceptions. And often, one is drawn like a moth to a flame when, upon arrival at the point of no return, the realization of what is really being seen draws him in and consumes him in the sublime.