Sheelagh (シーラ) is a reoccurring non-playable character in TRINITY: Souls of Zill O'll. The majority of the game has her act as a secondary antagonist, but she assists Areus's party as a NPC ally towards the game's climax. Zill O'll briefly mentions her as Zelashell's unnamed companion. She is 26 years old at the start of the game.