(voiced by Alec Baldwin) is a most unusual baby. He wears a suit, carries a briefcase and is on a secret mission to discover why babies are losing their market share of love. In order to accomplish his mission, he will have to join forces with his big brother, Tim.
(voiced by Miles Bakshi) is an ordinary boy with an extraordinary imagination. His perfect world is turned upside down when his new baby brother arrives. Convinced something is different about Boss Baby, he is determined to uncover the truth.
(voiced by Jimmy Kimmel and Lisa Kudrow) are the loving and exhausted parents of Tim and Boss Baby. Blissfully unaware that their new baby is a little different, they become unwitting pawns in Boss Baby’s secret mission.
(voiced by Steve Buscemi) is the charismatic and slightly unhinged CEO of PuppyCo. He is determined to put BabyCorp out of the baby business and will stop at nothing to accomplish it.
Engineered to stay a puppy forever, it is the cutest, most lovable ball-of-fluff ever created.
(voiced by ViviAnn Yee) is the Boss Baby’s tiny, tutu clad assistant. She may not be the best at notetaking, but she comes thru for Tim and Boss Baby when their mission turns dangerous.
is the diaper clad "muscle" of the group. He may not be very bright but he comes in handy whenever brute force is needed.
(voiced by Eric Bell Jr.) are the ideal yes men. Dressed in matching pajamas, they agree with everything that Boss Baby says and are ready for any adventure.