Origin of Superman early issues of the series, it was unclear if the story was intended to be the new origin of the mainstream Superman or the beginnings of a new universe, similar to Marvel's Ultimate line. DC later confirmed that "Birthright" was the new official origin of Superman, and it was embedded into the Superman fiction in "Superman" (vol. 2) #200. Krypton was redesigned again in "Birthright", portrayed as a society that used its advanced science and technology to make its planet into a paradise. Clark Kent respected his alien heritage and designed his Superman costume based on images of Kryptonian culture
Superman (Kingdom Come) powers from Williams, killing him, and reclaiming all of his own powers. Superman remains with the New Earth JSA. He is suspicious of the revived David Reid, who has been revived as Magog, and fearful that Reid will become like the being he knew on Earth-22. The "Daily Planet" is attacked and flooded with a green gas. Superman arrives and has a flashback to the time the Joker attacked his world's "Daily Planet". The green gas is filled with kryptonite, which has no effect on Superman other than to cause his eyes to sting. Superman captures the terrorists and questions