Doug (26 episodes, 2020-2022)
Emma Pine / Emma (26 episodes, 2020-2022)
Bob Bot / Brad / Chaz / Fancy / Frank / Seagull / Squishy Bots / Thomas's Grandpa (22 episodes, 2020-2022)
Jenny Droneberg (21 episodes, 2020-2022)
Uncle Forkrick (20 episodes, 2020-2022)
Becky Bot / Hostess (17 episodes, 2020-2022)
Laurence Pine / Additional Voices / Burt / Earl / Lauren Pine / Nurse Dirk / Seagull (17 episodes, 2020-2022)
Mop Bot / Mr. Julius / Additional Voices / Hank (11 episodes, 2020-2022)
Princess Woofingham (11 episodes, 2020-2022)
Monica Pine (10 episodes, 2020-2022)
Barb (9 episodes, 2020-2022)
Kath (8 episodes, 2020-2022)
Safety Bot (8 episodes, 2020-2022)
Agatha Pine / Tabatha Pine / Grubby Toddler (8 episodes, 2020-2022)
Julie / Audience Kid 1 / Child Shopper / Safari Sarah (7 episodes, 2021-2022)
Additional Voices / Aunt Rover / Cogsley Bot / Dolores / Esmerelda / Quinn / Whack-A-Mole Worker (6 episodes, 2021-2022)
Critter Bot / Turkey / Ernie / Groundhog / Hunky Dory / Scarebot (5 episodes, 2021-2022)
Thomas (5 episodes, 2021-2022)
Gary / Audience Kid 2 (5 episodes, 2021)
Grandbot / Goat (4 episodes, 2020-2022)
Nana (3 episodes, 2020-2022)
Cow / Moo-Phyllis (2 episodes, 2020)
Diverbot / Peter Bot (2 episodes, 2021)
Bernard Buzzbeak / Dirk / Waiting Room Man (2 episodes, 2021)
Becky Bot (Dutch) (1 episode, 2020)
Sleigh Bot (1 episode, 2021)
Miss Molly (1 episode, 2021)
Dr. Taflingarino (1 episode, 2021)
Bubbe (1 episode, 2021)
Gary's Dad (1 episode, 2021)
Gary's Mom (1 episode, 2021)
Mr. Gilmore (1 episode, 2021)
Nelson (1 episode, 2022)
Gail (1 episode, 2022)