Alonzo

Bombalurina

Bustopher Jones

Cassandra

Demeter

Electra -Hermione Granger

Etcetera - Neville Longbottom (Kid always blowing things up)

Grizabella - Voldemort

Growltiger & Griddlebone - Arthur and Molly Weasley

Gus

Jellylorum - Professor/Deputy Headmistress Minerva McGonagall

Jemima/Sillabub

Jennyanydots - Hagrid, Rubeus

Macavity - Quirrell, Professor (Dark Arts teacher)

Mistoffelees - Harry Potter

Mungojerrie - Ron Weasley

Rumpleteazer - Katie Bell (Gryffindor chaser for Quidditch)

Munkustrap - Oliver Woods (Captain of Gryffindor Quidditch team)

Old Deuteronomy - Albus Dumbledore

Plato

Pouncival - George Weasley

Rum Tum Tugger

Skimbleshanks

Tantomile - Madam Hooch

Coricopat - Professor Snape (Potions)

Tumblebrutus - Fred Weasley

Victoria - Draco Malfoy

(Since not everyone is a "Harry Potter" character yet, this cast list is always under construction until this little message you are reading now is gone. )