The term "former sidekick" denotes a person who has previously worked as an assistant or a support to someone else but has since moved on. Some synonyms for the word "former sidekick" include ex-sidekick, previous assistant, past supporter, former right-hand man/woman, one-time collaborator, and former ally. These terms can be used to describe people who have worked with superheroes, celebrities, politicians, or even in the business world. While the title of "former sidekick" may seem limiting, the use of these synonyms highlights the diverse range of experiences and collaborations that come with working as an assistant or supporter.