| ALPHA CENTURION|
The first Alpha Centurion Superman encountered was an anomaly that appeared during the "Zero Hour" incident. In his timeline, Superman did not exist and Metropolis’ hero was the Centurion who had a love affair with that world's Lois Lane. This Alpha Centurion fought bravely beside the heroes of the main timeline during Zero Hour. When he realised that he wouldn't exist if time was set back again, he hesitated if he should join the side of Parallax and Extant instead. However, when Parallax was defeated, Alpha Centurion faded out of existence. It is possible that he lives on in another Hypertimeline.
Shortly thereafter, the main timeline’s Alpha Centurion made his debut.