A detective's sidekick is a critical component of any great detective duo. This partner provides crucial support and assistance while working on a case. However, there are various synonyms for this term that can bring additional flair and creativity to the title. Instead of sidekick, one could refer to this partner as a detective's assistant, partner-in-crime-solving, confidant, wingman, protege, collaborator, or co-detective. Each of these synonyms adds a slightly different connotation to the classic sidekick role, allowing for more depth and nuance to the character. Overall, the detective's sidekick role is essential to any great mystery or crime-solving story.