Peter Labriola (born September 12, 1956), better known by the pen name Ace Backwords is an American author and a former underground cartoonist based in Berkeley, California.

[1][2] Backwords, born Peter Labriola, published Twisted Image, a punk rock tabloid, from 1982 to 1984 featuring interviews with Johnny Rotten, Jello Biafra, Henry Rollins, Charles Bukowski, R. Crumb, and Charles Schulz.

From 1989 to 2004, Backwords and B. N. Duncan [fr] produced the Telegraph Avenue Calendar, which featured selected people in Berkeley that were homeless.

In 1993, he drew original comic strips for John Hoffman's book The Art and Science of Dumpster Diving, also published by Loompanics.

In 2009, Backwords published his next book, Acid Heroes, about 1960s icons John Lennon, Ram Dass, Alan Watts, Hunter S. Thompson, R. Crumb, and Jerry Garcia.