What happened to Marshall Eriksen after How I Met Your Mother ended? The character was portrayed by Jason Segel for all nine seasons of the sitcom. Through a series of flash-forward scenes in the season finale, fans were given a glimpse into Marshall's future.
Marshall was known as the compassionate one of the gang, stemming from his upbringing in St. Cloud, Minnesota. He met Ted Mosby (Josh Radnor) and Lily Aldrin (Alyson Hannigan) while attending Wesleyan University, and those relationships would continue through the rest of his life. Marshall eventually married Lily and the couple had a few children. He often got himself involved in shenanigans while living in New York City. Despite the fun times he had with Ted, Lily, Barney (Neil Patrick Harris), and Robin (Cobie Smulders), Marshall heavily focused on his professional career.
Marshall wanted to be an Environmental Lawyer from a very young age. He studied Law at Columbia University and successfully passed the bar. Unfortunately, money problems forced him to push his dreams aside and instead he took a corporate job at Goliath National Bank. Marshall later quit his job at the corrupt corporation in How I Met Your Mother season 7 before he received a job in environmental law. Becoming a judge became Marshall's next dream but he put that goal on hold to move to Italy with Lily. By the time Marshall and his family moved back to New York, it's revealed that his hopes of becoming a judge never diminished.
The How I Met Your Mother series finale confirmed that Marshall was elected as a New York State Supreme Court Judge in 2020. Around the same time, Marshall began to lose his hair due to the stress of his new gig, forcing him to wear a toupee. At some point following the finale, he and Lily had a third child. Considering his career revelation, Marshall and his family remained in New York well into their later lives.
More details into Marshall's life could be pieced together from scenes shown throughout the series. In 2029, Marshall was shown to be opening Lily's death letter, but she was not dead. She caught him opening the letter early and scolded him before revealing that the letter was a fake. The following year during the season 9 episode, "Rally," Marshall and Lily dropped a teenage Marvin off at college.
The most amusing look into Marshall's future came in How I Met Your Mother season 5 with the episode titled "The Window." Marshall wrote a letter to himself 29 years into the future, requesting that Future Marshall let him know if time travel existed. During that same episode, the older version of Marshall from the year 2038 was on the other side of MacLaren's Pub, returning a plate of wings that were too hot. He then sat and watched his younger self, proving that Marshall eventually learned how to travel through time.