The mischievous but lovable teddy bear who can't speak above a whisper and dabbles in magic, often with humourous results
Sooty's best friend; an excitable and innocent, albeit somewhat dim-witted puppy dog who speaks in squeaks.
- Accessory Wearing Puppet Animal: He tends to wear a collar.
- Animal Jingoism: In Sooty & Co he claims not to like cats because he's a dog; this is dropped in Sooty when Miki, a puppet cat, is added to the cast.
- Big Eater
- Butt Monkey: He is quite frequently teased by the others, usually about his intelligence.
- Captain Obvious
- Cloud Cuckoo Lander
- Crossdresser: He's been seen wearing a dress on more than one occassion.
- The Ditz
- Genius Ditz: Although he's generally considered dim-witted, he has been shown to be able to build machines.
- Heterosexual Life-Partners: With Sooty, and later with Scampi.
- Keet: He can be rather hyperactive when he's excited.
- The Klutz
- Large Ham
- Motor Mouth
- The One Who Wears Shoes: It's not often shown, but he wears Wellies.
- Perpetual Frowner: The puppet is, but his personality isn't.
- Picky Eater: He dislikes vegetables in the episode "Bouncers".
- Precious Puppy
- Strong Family Resemblance: He looks just like his parents and his Massive Numbered Siblings.
- Superpowered Alter Ego: Superdog, but only in his dreams.
- Trademark Favourite Food: Bones and sausages.
- The Unfavourite: Sometimes treated like this.
- The Unintelligible: Sweep only talks in high-pitched squeaks, and has to be 'translated' by other characters. However, his squeaks are clearly synched to a written script, and some long-time viewers of the show can understand him even without translation.
- Why Did It Have To Be The Dark?: In the Sooty & Co episode "Sooty's Magic Solutions".
- In the new show, he is initially afraid of water.
A female panda and the most collected and sensible of the puppets. She is Sooty's girlfriend.
Little Cousin Scampi
Sooty's young cousin who is even more mischievous than Sooty himself.
The presenter of the show and father-figure (and victim) of the puppets.
The new presenter since Sooty Heights
; a cheerful magician who watches over the Sooty gang.
A boisterous bulldog who occasionally appeared, but became a regular in the Sooty
A tomboyish cat from Brazil who hangs out with Sooty and the gang in Sooty