Jojo/Boy
A "Thinker." A smart child with a wild imagination. A rambunctious kid whose "Thinks" get them into constant trouble. By the end of the show, Jojo learns what it means to be a responsible member of his community, using the power and possibilities of his own "Thinks."

The Cat in the Hat
The essence of mischief, fun, and imagination. The Cat stirs things up and causes trouble but always sets things right again. The Cat helps JoJo discover the power of his own imagination as they create the story of Seussical JR. together. 

Horton the Elephant
A gentle giant. Think of Horton as a big-hearted character who is steadfast, responsible, and always tries to do the right thing. Horton is sympathetic and receptive to the world around him. 

Mr. Mayor & Mrs Mayor
Mr. Mayor and Mrs. Mayor are parents trying hard to raise a child with a big imagination. These Whos may get aggravated with JoJo, but they love him dearly. They try their best to make the right choices as parents, even if JoJo doesn't always understand them. They are also upstanding members of their community. 

Gertrude McFuzz
Very self-conscious about her one-feather tail. Gertrude gains confidence throughout the show, changing from an anxious, nervous, shy bird into someone whose self-worth doesn't rest on her appearance. In other words, Gertrude realizes what's truly important in her life. 

Mayzie La Bird
Self-centered, vain, and manipulative. She ultimately means no harm, but she's immature and makes selfish decisions. In giving up her egg to Horton once and for all, she has a moment of self- awareness - she realizes she isn't the kind of bird who would be a good parent, and she does the best thing she can for the egg. 

Wickershams
The Wickershams are not bad guys! They tease, play pranks, and get a kick out of making mischief, although often at another's expense. 

Bird Girls
The Bird Girls are a fabulous group of birds who know everything there is to know about the goings on in the jungle and support Mayzie throughout the show. 

Sour Kangaroo
Loud, brassy, and a lot of fun. She's got a lot of attitude but isn't mean - she's just very confident and unafraid to tell it like it is. 

Young Kangaroo
Sour Kangaroo's feisty daughter. She may be pint- sized, but she's got a big personality and is following in her mother's footsteps.

Judge Yertle the Turtle
The authoritative judge who presides over Horton's trial at the end of the show. Yertle is a great role for a newer performer who may not be quite ready for the responsibility of a larger part. 

Vlad Vladikoff
The black-bottomed eagle who flies off with the Whos. Vlad is onstage very briefly and doesn't sing, so this is a good role for a member of your ensemble who can make a big impression in a short amount of time.

The Grinch
Arguably the most famous Seuss character of all! He has a brief, fun cameo in Seussical JR. Cast a good actor and singer who can have fun with the Grinch's short solo.

The Whos
The Whos are the citizens of Whoville and they look a lot like you and me, only so small they are invisible to the naked eye. They are a tight-knit, supportive community. 

Ensemble
The Jungle Citizens, Hunters, Circus Animals, Fish, Nurses, Courtroom Attendants

Transporting audiences from the Jungle of Nool to the Circus McGurkus, the Cat in the Hat narrates the story of Horton the Elephant, who discovers a speck of dust containing tiny people called the Whos. Horton must protect the Whos from a world of naysayers and dangers, and he must also guard an abandoned egg that's been left in his care by the irresponsible Mayzie La Bird.  Although Horton faces ridicule, danger and a trial, the intrepid Gertrude McFuzz never loses faith in him.  Ultimately, the powers of friendship, loyalty, family and community are challenged and emerge triumphant!