Everyone in Earth-Eight: Airborne Avengers

On Earth-Two, the Japanese scientist Prince Daka obsessed with obtaining the secrets to Starman's Gravity Rod which allowed the hero to glide through the air and defy gravity. On Earth-Eight, the scientist known as Tetsujiro Yoneda actually discovered this technique, or a variation at least, which he employed in his armor as the Empire's costumed crusader known as Kamikaze who would become his nation's preeminent protector of their perverse principles of the time, melding technology with tyrany.

Recruited into Axis Amerika in order to infiltrate and eliminate the recently revealed Young All-Stars, he would represent the Japanese Empire in this alliance of evil. Despite jetting through the air like Earth-Two's Hop Harrigan or Earth-One's Adam Strange, Kamikaze turned out to be a dud each time when matched with the West's finest!

How, though, can we say with certainty that this hero originated on Earth-Eight? It was revealed during the Infinite Crisis by Alex Luthor of Earth-Three that the potential Earth-Eight was where all remaining characters originated that had not previously appeared on former Earths known as Earth-One, Two, Four, S or X. Their adventures on that merged post-Crisis Earth would have mirrored those on Earth-Eight.