Gary Cole, embodying Alden Parker on NCIS, successfully filled the iconic role of Leroy Jethro Gibbs. As Season 21 approaches, fans can rest assured that Cole is set to return. In an interview, Cole acknowledged the challenge of replacing Gibbs but assured viewers of a familiar yet different transition. Co-star Sean Murray emphasized Parker’s deliberate departure from Gibbs’ personality, and executive producer Charles Floyd Johnson expressed satisfaction with Cole’s contribution, calling him their new flagship actor. Season 21 promises further development of Parker’s character, exploring his past and adding complexity to his personality.