Steve Burns from "Blue's Clues" has been a staple since the show's first episode back in 1996 (via IMDb) and made an appearance in two episodes of "Young Sheldon" in 2020 and 2022. He first appears as the character of Nathan, a fellow "Star Trek" enthusiast that Sheldon befriends through an online connection, during the episode "A Live Chicken, a Fried Chicken, and a Holy Matrimony" (via TV Guide). He reappears as the character during Season 5's "A Pink Cadillac and a Glorious Tribal Dance," where Sheldon attends his first comic book convention. Although Burns's appearances are relatively short-lived, he has contributed to another essential part of "Young Sheldon."
Burns is the writer and singer for the show's main theme song, "Mighty Little Man." Also notably, just after the height of the COVID-19 pandemic in 2020, he released a heartfelt video in September of 2021 addressing his abrupt exit from "Blue's Clues" and the state of the world that went viral (via Twitter). He reappeared in 2019's "Blue's Clues & You" and just finished production on "Blue's Big City Adventure."
