Cast Members Update: Season 5 Cast Member S1 S2 S3 S4 S5 Bullwinkle Main Rocky Main Boris Main Natasha Main Underdog Main Guest Sweet Polly Main Guest   Guest Dudley Main Guest Nell Main Recurring Guest   Snidely Main*   Tooter Main   Guest Hoppity Main   Guest Tennessee Main Guest   Guest Chumley Main Guest   Mr. Peabody Main   Guest Sherman Main   Guest * Snidely leaves the series partway through season 4, being credited as a guest star afterwards. Update: Season 4 Cast Member S1 S2 S3 S4 Bullwinkle Main Rocky Main Boris Main Natasha Main Underdog Main Sweet Polly Main Guest   Dudley Main Nell Main Recurring Guest Snidely Main* Tooter Main   Hoppity Main   Tennessee Main Guest   Chumley Main Guest   Mr. Peabody Main   Sherman Main   * Snidely leaves the series partway through season 4, being credited as a guest star afterwards. Update: Season 3 Cast Member S1 S2 S3 Bullwinkle Main Rocky Main Boris Main Natasha Main Underdog Main Sweet Polly Main Guest Dudley Main Nell Main Recurring Guest Snidely Main Tooter Main Hoppity Main Tennessee Main Guest   Chumley Main Guest   Mr. Peabody Main   Sherman Main   Update: Season 2 Cast Member S1 S2 Bullwinkle Main Rocky Main Boris Main Natasha Main Underdog Main Sweet Polly Main Dudley Main Nell Main Recurring Snidely Main Tooter Main Hoppity Main Tennessee Main Guest Chumley Main Guest Mr. Peabody Main Sherman Main Original List Cast Member S1 Bullwinkle Main Rocky Main Boris Main Natasha Main Underdog Main Sweet Polly Main Dudley Main Nell Main Snidely Main Tooter Main Hoppity Main Tennessee Main Chumley Main Mr. Peabody Main Sherman Main Episode Archive