As the core Avengers time in the Marvel Cinematic Universe is coming to an end, one member has yet to get an actual replacement. During the early stages of the MCU, six Marvel heroes were key in building up the franchise. Iron Man, Captain America, Hulk, Thor, Black Widow, and Hawkeye made their debut as a team in 2012s The Avengers movie. The original core Avengers became pillars of the MCU, guiding the next generation of heroes and leaving a lasting legacy even almost two decades after their introduction.

https://screenrant.com/thor-only-mcu-original-avenger-no-replacement-hero/