<Li> Peter Dinklage as Ronald / Renault, an unscrupulous business man and rival to Michelle . He holds a long time grudge towards Michelle due to the fact that they dated in the past, but broke up due to a promotion Michelle got, which instantly changed her behavior and caused them to break up . He was also responsible for turning Michelle over to the authorities for insider trading . He constantly names himself Renault and follows the lifestyle of a samurai . </Li> <Li> Ella Anderson as Rachel Rawlings, Claire's 10 - year - old daughter, who was part of a girl scout team called the Dandelions, but quits after being bullied and chastised by Helen and being convinced to join alongside Michelle in her scheme . </Li> <Li> Tyler Labine as Mike Beals, a co-worker of Claire's, who seems to try to woo Claire, who constantly rejects him softly . </Li> <Li> Kathy Bates as Ida Marquette, a former mentor of Michelle's who is the owner of a glue factory . She cut off their alliance, after Michelle decided to push Ida away from a deal she made from another company . </Li>

Who plays mike in the movie the boss