 JP KarliakBoss Baby (voice) | Boss Baby (voice) |
 Pierce GagnonTim (voice) | Tim (voice) |
| AAmaryllis AubelFrench Girl (voice) | French Girl (voice) |
 Jodi BensonLala Doo-Da (voice) | Lala Doo-Da (voice) |
 Alex CazaresStaci (voice) | Staci (voice) |
| KKalen ChaseDiddly Doo (voice) | Diddly Doo (voice) |
 Ray ChaseDing Dong Dongle (voice) | Ding Dong Dongle (voice) |
 David W. CollinsDad (voice) | Dad (voice) |
 Dana DavisJingly Jangly (voice) | Jingly Jangly (voice) |
 Charles DewayneTippy Tappy Sloppy (voice) | Tippy Tappy Sloppy (voice) |
 Mary FaberTina (voice) | Tina (voice) |
 Justin FelbingerDanny Petrosky (voice) | Danny Petrosky (voice) |
 Nick FisherGrateful Boy (voice) | Grateful Boy (voice) |
 Ariana GreenblattTabitha (voice) | Tabitha (voice) |
| BBen LepleyNoth Pole (voice) | Noth Pole (voice) |
 Hope LevyMom (voice) | Mom (voice) |
 Max MittelmanAdult Tim (voice) | Adult Tim (voice) |
 Matthew MoyPoopyDoopy (voice) | PoopyDoopy (voice) |
 Kevin Michael RichardsonJimbo (voice) | Jimbo (voice) |
 Brandon ScottHendershot (voice) | Hendershot (voice) |
| RReal Michael ScottAdditional Voices (voice) | Additional Voices (voice) |
 Kari WahlgrenR&D Baby Simmons (voice) | R&D Baby Simmons (voice) |
 George LópezSanta (voice) | Santa (voice) |
