John Powers Severin was an American comic book artist noted for his distinctive work with EC Comics, primarily on the war comics Two-Fisted Tales and Frontline Combat; for Marvel Comics, especially its war and Western comics; and for his 45-year stint with the satiric magazine Cracked. He was one of the founding cartoonists of Mad in 1952. Severin was inducted into the Will Eisner Award Hall of Fame in 2003.

Hollingsworth graduated from The Kubert School in 1991 and began getting regular work from Marvel Comics and DC Comics. In 1993, he was hired to the Dark Horse Comics staff as head of the painted art department. After a year, he returned to freelance work and helped launch the award-winning Preacher from DC's Vertigo imprint. He has worked on many titles for DC/Vertigo, Marvel, and others, including Catwoman, Batman, Daredevil and Alias. He won an Eisner Award for Best Colorist/Coloring in 1997, for work on several comics including Death: The High Cost of Living. He was nominated in 2004 for Catwoman. His latest project is an Eternals book written by Neil Gaiman and pencilled by John Romita, Jr.. Hollingsworth signed an exclusive contract with Marvel in April 2010.[1] In 2003, he enrolled in the Gnomon School of Visual Effects in Hollywood to become a visual effects artist in the film industry. He began working as a texture painter and technical director on such films as Sky Captain and the World of Tomorrow, Fantastic Four, Serenity, Superman Returns, among others. Toward the end of 2006, Hollingsworth moved to Croatia.