Will Forte as Tim Willoughby (voice)

Maya Rudolph as Nanny (voice)

Alessia Cara as Jane Willoughby (voice)

Terry Crews as Commander Melanoff (voice)

Martin Short as The Father (voice)

Jane Krakowski as The Mother (voice)

Seán Cullen as Barnaby Twins (voice)

Ricky Gervais as The Cat (voice)

Fiona Toth as Travel Agent (voice)

Islie Hirvonen as Perfect Daughter (voice)

Colleen Wheeler as Social Worker (voice)

Bonnie Riley as Mikelina (voice)

Robyn Ross as Real Estate Agent (voice)

Shannon Chan-Kent as Baby Ruth (voice)

Rebecca Husain as Sweetie (voice)

Cristina Rosato as Reporter (voice)