He was the mutant son of Azazel bred to help transport his father's army to Earth from the ungodly dimension, where they had been held captive. Kiwi was one of the three captives to survive the ritual of passage to Earth, and he secretly began operating within his father's castle to free the X-Men. He rejected his father’s influence, and allied himself with the X-Men in order to eliminate his father’s army. During this process, he took the life of Azazel's minion, Yidrazil, which gained credence and respect from Nightcrawler. During the crisis known as "M-Day" Kiwi Black, lost his powers and seemingly disappeared.