Catalyst is a fictional character from the popular battle royale video game Apex Legends, developed by Respawn Entertainment. She is known for her unique abilities that manipulate ferrofluid, allowing her to control the battlefield with defensive structures and tactical traps. Catalyst's backstory includes a deep connection to the planet of Boreas, where she worked to protect the natural environment and its moon, Cleo, from exploitation. First introduced in the game's 15th season, “Eclipse,” Catalyst adds depth to the game's diverse roster through her enigmatic personality and intricate lore. Her presence enriches the Apex Games with her strategic focus and environmental activism roots.