Lucas Baker is a character in the game Resident Evil 7: Biohazard.
Lucas is the son of Jack and Marguerite and Zoe's brother, a mentally unstable genius whose personality is described as an amalgamation of The Riddler, Jigsaw, and Jake Paul.
While infected by Eveline, Lucas received a serum from The Connections that allowed him to retain his free will in return to observe Eveline for them. But Lucas ultimately betrays his benefactors with the intent of using Eveline for his own agenda. Lucas also weaponized a series of areas with traps and monsters, while Ethan managed to survive in part of watching a recording of Lucas's previous victim Clancy Javis.
Lucas' fate is dealt with in a new sub-chapter entitled Not a Hero, which follows Chris Redfield and is set following the events of the base game. After losing three soldiers to Lucas' deadly machinations and traversing gas filled tunnels, Chris eventually locates Lucas and shoots him, who mutates into a powerful creature before being slain by Chris. Chris then destroyed the computers to prevent the data on Eveline from being transferred to an unknown client. Lucas also appears in the downloadable content "Banned Footage" chapters, which predate the main story.