Edgar Rics Burrough's "Tarzan of the Apes" is arguably one of the first true comic heroes. Appearing in print form as early as 1912, his stories have appeared in comics, radio, television and moving picture form for nearly a century now, and the Jungle Lord shows no signs of slowing down! According to Wikipedia:

"Tarzan has appeared in many comic books from numerous publishers over the years. The character's earliest comic book appearances were in comic strip reprints published in several titles, such as Sparkler, Tip Top Comics and Single Series. Western Publishing published Tarzan in Dell Comics's Four Color Comics #134 & 161 in 1947, before giving him his own series, Tarzan, published through Dell Comics and later Gold Key Comics from 1948 to 1972.. DC took over the series in 1972, publishing Tarzan from 1972 to 1977, including work by Joe Kubert.