Danny Stevens is the eldest child of Gordo Stevens and Tracy Stevens. He is the elder brother of Jimmy Stevens. During a Summer working at Outpost Tavern, he fell in love with Karen Baldwin.
Season 1
In Season 1, Danny Stevens, played by Mason Thames, was close friends with Shane Baldwin. He was scolded by Karen Baldwin after sneaking into Shane's bedroom after he had died.
Between Season 1 and Season 2
A photo from the Time Capsule app of Danny Stevens and Lisa Martinelli. On the back, Lisa had written "A perfect 16th birthday weekend with Danny."
Before the release of Season 2, Apple released For All Mankind: Time Capsule, described as a "narrative experience" told in augmented reality and created by Ronald D. Moore. The story follows Danny in the years 1979-1980 as he examines keepsakes from a former relationship with Lisa Martinelli. Every object in the experience tells a story and further fleshes out the events between Season 1 and Season 2,
- In 1974, shortly after the events of Season 1, Gordo and Danny go on a camping trip to Big Bend in 1974.
- Danny and Lisa take a road trip to Austin, Texas in 1980, and go to a Bob Dylan show.
- Danny's close friendship with Kelly Baldwin develops, such as when Danny asks Kelly for advice through D-Mail.
- Lisa's lack of interest in attending Tracy's space launch serves as a catalyst for the end of their relationship.
Season 2
In Season 2, Danny is a student at the Naval Academy at Annapolis. He works part-time at The Outpost, and smokes a joint with Karen Baldwin, promising her to "not tell if you don't." Later on in season 2, the pair have sex, in one of the most controversial side-plots of the show so far