Superman Family: The Blonde Caped Crusaders

During the early days of Superboy of Earth-One and Superman of Earth-Two, a pair of courageous blonde hair troubleshooters joined them in their crusade against crime, and each would eventually adopt costumes similiar to the Boy and Man of Steel.

Superboy's childhood pal Pete Ross, was the nephew of a revered Scotland Yard inspector of Earth-One, following in his footsteps in helping unocover mysteries and helping the oppressed. Pete learned of Clark's secret, while witnessing his transformation during a camping trip. As such, Pete had on several occasions assisted his buddy by creating distractions that allowed Clark to become Superboy. This led to Ross being invited to the Legion of Super-Heroes as an honorary member. He even masqueraded as Superboy on occasion such as to protect him from his Revenge Squad. On another occasion, Pete gained the powers of his pal due to the machinations and manipulations of young Lex Luthor, while Superboy was left temporarily powerless.

At the same time that the Superman of Earth-Two appeared for the first time, protecting the citizens of Metropolis, another hero debuted half a continent away. This was the wealthy young oil baron known as Tex Thomson, who found himself battling various threats around the world. He would eventually be accompanied by his pal Bob Daley, and after a couple of years both decided to became masked men. Tex became first Mister America and then  the Americommando, while Bob became Fatman. This new identity necessitated Tex dying his hair black to complete his disguise as well as creating a special mechanism within his cape allowing him to fly. It was around this time that Mister America met and worked alongside Superman, as both were members of the All-Star Squadron.

Pete's son Jonathan later learned of Superman's alter ego, and had a few adventures alongside him when learning of his dual identity. When aliens kidnapped Jonathan, there was strain between the two men as Pete resented the fact that Clark didn't protect his son. Using a device created by Lex Luthor, Pete transplanted his brain into the body of Superboy from over a decade earlier, bringing him to the future to fight his former friend. When Superman defeated this hybrid Superboy with help from his pet and his younger self in Pete’s body, he had Ross incarcerated in a mental institution until he could save Jonathan and reunite him with his father. 

Tex would likewise succumb to tragedy, when in one possible future timeline he was captured by Superman's arch-enemy the Ultra-Humanite, who then used his body to contain his brain. When his latest scheme versus his adversary failed, Tex abandoned Thomson's body for that of others. However, Tex seemed to have had a son as a grandson Trey later revealed himself to the world decades later.