Fallout Season 2: Macaulay Culkin as a Potential Game-Changer in Caesar’s Legion
January 2, 2026

Fallout Season 2 has prominent fan speculation surrounding Macaulay Culkin's recent appearance, who is introduced in Episode 3 as a member of Caesar’s Legion. Theories suggest that his character could play a pivotal role in altering the balance of power in the post-apocalyptic Wasteland, especially involving Lucy (Ella Purnell) and the Ghoul (Walton Goggins) crossing paths with the bloodthirsty faction.
Culkin's Mysterious Role in the Series
Rumors about Culkin’s involvement circulated as early as November 2024, but his casting was kept secret until a trailer dropped in November 2025, revealing him clad in Roman armor. In Episode 3, viewers learn that Caesar’s Legion is split into two factions following Caesar’s death. The factional war centers around Caesar's will, which designates his successor, with his body left in a no man’s land between the groups.
Culkin portrays a high-ranking officer titled Lacerta Legate, but his true name remains undisclosed, fueling speculation about his importance. Some fans suggest that his character is destined to become a major figure in the Legion’s future.
Fan Theories: Culkin as the Next Caesar?

A popular theory from Reddit posits that Culkin’s Lacerta Legate could rise to unify Caesar’s Legion and ascend as the new Caesar amidst the civil strife. Described as a “crazy genius,” his character might be manipulating the factional conflict for personal gain.
One theory speculates that Culkin’s character will eventually seize control of the Legion, becoming its new leader, and set out to destroy the weakened New California Republic (NCR). This would allow him to claim control over critical strategic locations such as Hoover Dam and New Vegas, establishing a formidable new empire.
Evidence Supporting the Theory
A promotional image shows the Lacerta Legate donning Caesar’s iconic golden crown, fueling the idea that he will assume leadership. Additionally, in Fallout: New Vegas, Boone mentions that the Legion has a clear line of succession, implying Culkin’s character may be a candidate for Caesar’s successor.
Including Culkin’s character as the next in line would be consistent with established lore, offering a new interpretation while respecting the foundations laid by the game series. A stronger, more unified Legion could threaten the NCR, which has been weakened recently—especially after Hank’s nuclear attack on Shady Sands.
Future Developments and Lore Compatibility
Todd Howard, a key figure at Bethesda, has stated that Fallout Season 2 will not retcon any endings from New Vegas. This opens the door to Culkin’s character fulfilling a role within the existing mythology, perhaps as a successor to Caesar or as a new leader forging his own path.
Fans will need to stay tuned for upcoming episodes to confirm whether Culkin’s role is as foundational as current speculation suggests. Until then, fans are encouraged to explore the soundtrack of Fallout Season 2, consider why now is an ideal time to dive into Fallout 76, and ponder how Fallout 5 might be shaped by the events in the show.
Stay tuned for more updates as the series develops and more clues unfold about Macaulay Culkin’s potential impact on the Fallout universe.