The Marvel Cinematic Universe has accompanied global audiences for more than a decade, released more than 20 movies, and spawned dozens of superhero characters. Among the many superheroes in the MCU, some have withdrawn from the historical stage of the "Avengers", and some have already determined successors.
Some superheroes in the MCU have identified successors, but they do not have the next generation. Earlier this year, the MCU's first episodic work, Wanda's Vision, aired, in which Wanda used her chaotic magic to create an illusion in which she and her beloved, Vision, had offspring. But it's all fake, and Vision left this world as early as Avengers 3.

There are dozens of superheroes in the MCU, of which there are very few who really have offspring, so let's take stock of the superheroes in the MCU who have descendants.
Clint Barton (Hawkeye).
Hawkeye has three children, a daughter and two sons. In Avengers 2, Hawkeye's daughter and one of her sons appear, and the other young son is still in her mother's belly.
Later in Avengers 4, Hawkeye's daughter has grown up, her youngest son has been born, and a family of five has gathered.
Scott Lang (second generation Ant-Man).
Ant-Man has a daughter, Kathy Long, who first appeared in the independent film Ant-Man, played by American young actor Abby Ryder Forterson.
"Ant-Man 2", released in 2018, also has the role of Ant-Man's daughter Kathy Lang, still played by Abby Ryder Forteson. By the later "Avengers 4", Ant-Man's daughter had grown up, and the actor had been replaced by Emma Foreman.
Tony Stark (Iron Man).
In Avengers 4, after Tony Stark was rescued from outer space by Captain Marvel, he began a life of seclusion with his lover Pepper because of fear, and never communicated with the outside world for five years.
During these five years, Tony Stark and Pepper Jr. have their own daughter Morgan Stark, who plays Alexandra Rachel Rabe (who also starred in Godzilla 2: King of the Monsters).
At the end of the film, Tony Stark snaps that fatal ring finger, causing him to leave this world permanently. In fact, in this plot, there was another version, that is, Tony Stark came to another world after ringing his fingers, in which he saw his grown daughter, morgan Stark, who grew up, played by Catherine Langford.
Hank Pym (Generation Ant-Man) and Janet von Dane (Generation Waspwoman).
The offspring of Ant-Man and a generation of Wasp Women are the second wife of Second Generation Ant-Man Scott lang, Hope van Dane, who is also a second Generation Wasp Woman, and the role in the film has always been played by Evangeline Lily.
Among the many superheroes in the MCU, only the descendants of Hank Pym and Janet von Dane are still superheroes, and their husbands are also superheroes. Their family, with the exception of Kathy Lang, the daughter of the second generation of Ant-Man, is a superhero.