Adult narrator Dean mentions in his voiceover how he always dreamed of becoming a superhero through a science accident (as he and his friends flip through an Avengers comic). The voice of the older Dean is provided by Don Cheadle, who played Warmachine in multiple Iron Man and Avengers films.
Dean hopes that his mother gets her own story, maybe in a better spin-off than the original. As a result, his statement acts as a hopeful line that this show (a spin-off of The Wonder Years (1988) ) will be better than the original.