| Character | Name | Author |
| A nocturnal feeder and protector of animals | |
| A two-headed gazelle-unicorn cross | |
| A pet dog from California who ends up in Alaska | |
| A bad-tempered wish-granting fey creature | |
| A maid who tends to take things literally | |
| An initially unpleasant 11-year-old foster child | |
| An optimistic steam engine | |
| An orphan whose name has become a byword for optimism | |
| A child-hating ex-wrestler | |
| A vermicular resident of Busytown | |
| An instigator of wild rumpuses | |
| The purveyor of delicious ham and eggs | |
| A girl with a reclusive Alpine grandfather | |
| The unknowing heir to the House of Shaws | |
| A mouse who lives with a famous detective | |
| A letter-writing dweller in Northern climes | |
| The nanny at #17, Cherry Tree Lane | |
| Tom Sawyer's love interest | |
| A retired magician who doesn't like dogs | |
| A child who wishes to move to Australia | |
| A rooster, enemy of Cockatrice | |
| A mouse with human parents | |
| A cruel and vindictive Minnesotan schoolgirl | |
| A fever-stricken boy's stuffed animal | |