Michael Garibaldi is a fictional character from the science fiction television series Babylon 5. He serves as the Chief of Security on the space station, known for his resourcefulness and dedication to maintaining order. Garibaldi is portrayed by actor Jerry Doyle and is a key figure in the series, often involved in various political and personal conflicts. Throughout the series, Garibaldi struggles with his past, including issues related to addiction and betrayal. His character development is significant, as he evolves from a cynical security chief to a more complex individual who values friendship and loyalty. Garibaldi's interactions with other characters, such as John Sheridan and Delenn, highlight his importance in the overarching narrative of Babylon 5.