Kraven is a maniacal big game hunter who seeks to defeat Spider-Man to prove that he is the greatest hunter in the world. Unlike other hunters, he typically disdains the use of guns or bow and arrows, preferring to take down large dangerous animals with his bare hands. He also lives by a code of honor of sorts, choosing to hunt his game fairly. He consumes a mystical serum to give himself enhanced strength and dramatically slow the aging process. Kraven was trained as a hunter largely by a mysterious man named Gregor, a mercenary who once battled Ka-Zar. Kraven was, at one point, the lover of the priestess Calypso.