Since I saw the lazy town one, I'll give it a shot
Dougal - Gluttony. He seemed to like eating things like sugary sweets
Dylan - Sloth. He just likes sleeping
Ermintrude - Pride. Ermintrude seemed like she is the important one here.
Brain - Greed. Stones are his favourite things but he cares about his friends.
Zebedee - Envy. Dont worry he is not jealous but he likes changing things to trick or save the characters.
Florence - Lust. She's a girl and Most female characters are lustful
Zeebad - Wrath. He wanted to do a new ice age