Handsome young dimwitted French opera singer from "The Vampire of the Opera" story of horror comic book The Beyond #9 (March 1952). He sings at the Paris Opera House with his girlfriend Colette, performing the opera Aida.
When Mademoiselle Pourette joins the company, she immediately has designs on him, which is bad, since she's the vampire of the title. She tries to seduce him, and also sucks his girlfriend's blood. It's up to old concierge Pepe to convince Marcel to defend his girlfriend, and stab Madame Pourette in the heart and defeat her.
Marcel's last name is not given.