Who Is Starfox, Thanos' Brother, Anyway?

Starfox, otherwise known as Eros of Titan, was created by Jim Starlin and first appeared alongside his brother Thanos in Invincible Iron Man #55 in 1973.
Starfox, otherwise known as Eros of Titan, was created by Jim Starlin and first appeared alongside his brother Thanos in Invincible Iron Man #55 in 1973. A member of what were then depicted as a human offshoot race known as the Eternals, he was born on Saturn's moon Titan where his race had settled, son […]

Nate Moore says “more to come” from Harry Styles #Starfox aka Eros. And also confirms that he is the actual *half* brother of Thanos & that they share the same father, all

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Thanos (Earth-616), Marvel Database

Starfox (Eros), Characters

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Starfox (Eros), Characters

Why was Harry Styles chosen to play Starfox in Marvel's The Eternals? - Quora