At the start of the Silver Age, characters such as the Flash and Green Lantern were revamped for more modern times, ignoring or abandoning established continuity and thus making a clean break between the two eras.

These choices helped DC Comics to restore continuity to some of the character's Golden Age stories and led them to experiment with a Superman other than the mainstream one.

Kal-L was written to be different from the original Golden Age Superman, most famously by revealing his secret identity to Lois Lane and eventually marrying her in 1950.

As Superman, Kal-L was considered the first public superhero in the history of Earth-Two, being the first individual to appear regularly in a colorful costume and display superhuman abilities, in contrast to earlier part-time super-powered heroes such as Doctor Occult.

In a contended[vague] story, Kal-L received training in his teen years from his Earth-One counterpart, after Superboy was accidentally transported to Earth-Two (and back in time several decades to the early 1930s).

He subsequently appeared with it in two published adventures during the 1940s, aiding them on several other occasions retroactively as a member of the World War II All-Star Squadron.

[5] In his secret identity as Clark Kent, Superman also enjoyed success at the Daily Star, of which he was appointed editor-in-chief in the 1950s, replacing George Taylor.

At some time during the Silver Age, Superman's cousin Kara arrived on Earth after a lengthy journey from Krypton.

Kara's Symbioship is designed to keep her in stasis during the journey and provide her with life experiences and education in the form of a virtual reality.

In Crisis on Infinite Earths, Superman is rescued from the destruction of Earth-Two and travels to another dimension alongside Lois Lane, Alexander Luthor Jr., and Superboy-Prime.

[10] Kal was content to stay in the paradise dimension until Lois began to fall ill, when he created a replica of Metropolis and the Daily Star office building in an attempt to help.

Alexander and Superboy used Kal-L's distraction over Lois' health to break out of the paradise dimension and start their plan to recreate the Multiverse.

[11] Appalled by the rapidly deteriorating state of affairs in the world, Kal-L and his three companions emerge from their self-imposed exile to help.

[14] Power Girl is knocked out and captured by Superboy-Prime after discovering Alexander Luthor Jr.'s tuning fork, which he plans to use to restore the Multiverse to search for the perfect Earth.

The two Supermen then team up to overcome Superboy-Prime by dragging him into space through Krypton's red sun Rao, causing all three to lose their powers and crash land on Mogo.

[26][27][28] The Earth-Two Superman has super-strength, the power of flight, super-speed, super-breath, arctic breath, super-hearing, super-vision (including X-ray, heat, microscopic and telescopic visions) and invulnerability to most forces other than magic, psionics and Kryptonite.

He is at least as strong as Superman of the Silver Age from the Pre-Crisis continuity, and was capable of landing the killing blow against Anti-Monitor (who had been already weakened), reducing him to a skull with a "star-shattering" punch.

A later conflicting reinterpretation stated that his powers fluctuated when under a red sun, as noted in Infinite Crisis and All-Star Comics.

[35] Starman admits the possibility that the missing Post-Crisis Earth-2 Superman is still alive (Justice Society of America [second series] #23) despite being lost, whereas Kal-L is dead.

A completely separate Earth-2 Superman was introduced in the new Earth 2 series launched in May 2012 as part of "The New 52" (a reboot of the DC Comics universe).

[36] This new Earth-2 Superman was seemingly killed alongside his world's Batman and Wonder Woman while fighting off an invasion from the planet Apokolips led by Steppenwolf.

[38] After being snapped out of Darkseid's control by his wife Lois Lane (who in this reality inhabits the wind-manipulating robot body known as Red Tornado after it was uploaded into the android body by Sam Lane and Robert Crane), Superman and Red Tornado leave for the Kent family's farm.

[36] After a protracted battle with Earth 2's superheroes, in particular Green Lantern (Alan Scott) and a younger Kryptonian, Val-Zod, he is revealed to be scaling and decomposing.

"[40] Created by Tom Taylor and Nicola Scott, the Earth-2 universe's Val-Zod takes over the role of Superman from Kal-El starting in Earth-2 #25 and throughout the Earth-2: World's End mini-series.

[43] Val-Zod was later found by the Wonders to fight what appeared to be a brainwashed Superman calling himself Brutaal and discovered that he was a Kryptonian.

[47] Accompanying Red Tornado and Batman to save the people from the remaining fire pits, Val-Zod encountered Huntress and Power Girl.

[50] As Power Girl took on Huntress, Val-Zod worked to evacuate the others only for DeSaad to unleash Yolanda Montez (who was transformed into the Avatar of the Red) on them.

Afterwards, Val-Zod and Power Girl bury the real Superman's body on a hill and then headed to the World Army outpost where they answer Flash's distress call.

[52] Val-Zod begins his attack on the terraformer with the assistance of Power Girl and Red Tornado which caused it to unleash a horde of Parademons.