Marc Chambost, as indicated by his name, is likely a compassionate and understanding individual. Marc, being ruled by Mars, gives him a sense of bravery and determination, while Chambost, being of French origin, may suggest an artistic or creative nature. Marc is likely to be ambitious and energetic, always seeking to achieve his goals with enthusiasm and vigor. He may have a natural leadership quality that draws others to him, as well as a competitive spirit that drives him to excel in his pursuits. In relationships, Marc may possess a fiery passion and a strong sense of loyalty, making him a devoted partner. 

In terms of his horoscope, Marc may be ruled by the sign of Aries, given his assertive and confident nature. Aries individuals are known for their independence, courage, and determination, traits that likely resonate with Marc. He may also exhibit the traits of a fire sign, such as creativity, spontaneity, and a dynamic personality. Marc may be a natural-born leader, always willing to take charge and make things happen. However, he may need to be mindful of his impulsive nature and tendency to be aggressive at times. Overall, Marc Chambost is likely to be a dynamic and passionate individual, destined for success in whatever he chooses to pursue.