Heroes Reborn Merges

In Marvel's Heroes Reborn 2021 event, the classical Squadron-Supreme is revamped and its' status as a mirror to DC and the Justice League is taken and twisted to the ultimate, mixing and mashing up regular Marvel characters along with Earth-S characters in order to create warped analogues to both original Squadronverse characters and their DC counterparts. Because this world was deliberated crafted by Phil Coulson using Mephisto's Pandemonium-Cube, it was willfully shaped using qualities of Earth-616 along with knowledge of various other alternate-realities placed in Coulson's mind by his hellish master.

=Hyperion (Marcus Milton)= Hyperion (Marcus Milton)
 * His suit, cape, and domino-mask is near-identical to his Earth-712 version
 * His name is Marcus Milton and has power-levels comparable to his Earth-13034 version
 * He has demonstrated freeze-breath, like his Earth-4023 and Earth-12041 versions

Blue-Marvel (Adam Brashear)

Sentry (Robert Reynolds)
 * Hyperion effortlessly killing Galactus is much like Sentry fighting Galactus to a standstill

Captain America (Steven Rogers)
 * His title "Super-Sentinel of Liberty" is like Captain America's titles "Super-Soldier" and "Sentinel of Liberty"
 * His title "Man of American Might" is similar to the various patriotic appellations applied to Steve Rogers

Iron-Man (Anthony "Tony" Stark)
 * He wears a red and gold superhero outfit
 * He was one of the two sides in a SuperHero Civil-War
 * He imprisons various villains in a Negative-Zone prison

Kid-Gladiator (Kubark)

=Power-Princess (Zarda)= Power-Princess (Zarda)

Thor OdinSon

Angela (Aldrif OdinsDottir)

Captain Marvel (Carol Danvers)

Thundra
 * Both wield notable chain-weapons, Thundra's chain-mace and Zarda's Chain of Veracity

=NightHawk (Kyle Richmond)= NightHawk (Kyle Richmond)

Captain America (Steven Rogers)

Spider-Man (Peter Parker)

Iron-Man (Anthony "Tony" Stark)

=The Blur (Stanley Stewart)= Whizzer (Stanley Stewart)

Speed-Demon (James Sanders)

The Blur (Jeffrey Walters)

Boundless (Elena Rodriguez)

FastForward

Sorcerer-Supreme (Stephen Strange)

Spider-Man (Peter Parker)

=Dr. Spectrum (Joseph Ledger)= Dr. Spectrum (Joseph Ledger)

Quasar (Wendell Vaughn)
 * The relationship between Dr. Spectrum, the Power-Prism, and Mephisto mirrors the relationship between Quasar, the Quantum-Bands, and Eon/Epoch.
 * The Power-Prism is a cosmic-gem tapping an unlimited supply of energy, much like the gems on the Quantum-Bands.

Nova (Richard Rider)
 * Both are affiliated with a version of Knowhere, a space-station built in the severed head of a Celestial.
 * Both were succeeded by/inspired Sam Alexander and mentored the young superhero.

Nova (Jesse Alexander)
 * Both are enemies of the Black-Novas/SuperNovas
 * Sam Alexander gained powers from an item belonging to them: Spectrum's Power-Prism and Jesse's Nova-Helmet

=Minor characters=

Dr. Juggernaut (Victor VonDoom)
Dr. Doom (Victor VonDoom)

Master Menace (Emil Burbank)