The Jabberwocky is a character that was deleted from the movie Alice in Wonderland. It is known that he would appear in the removed song: Beware the Jabberwock, which was to be sung by Stan Freberg. The scene would take place after Alice left the tea party and before reaching the palace of the Queen of Hearts. The Jabberwock is based on the creature from the poem Jabberwocky, included in the original novel by Lewis Carroll Through the Looking Glass, and is itself commonly (though incorrectly) referred to as the Jabberwocky.
One of many sequences removed from the film, concept art for the sequence would end up being used in a Disney-published picture book version of the Jabberwocky poem. The Jabberwock also appears in the educational film Alice in Wonderland: A Lesson in Appreciating Differences. The poem itself would still be referenced in the final film with the Cheshire Cat's song Twas Brillig taking its lyrics from the opening stanza of the poem.
Wonderland (comic)
Though the Jabberwocky is absent in the movie, it is in the comic book; however, the creature is extremel different from its deleted movie counterpart. It has three green eyes with pupils that don't glow, massive claws, has several checkerboard patterns on its skin, wears no clothing is of a lighter coloration and, despite having wings, is incapable of flight.
The creature is first seen in chapter two, "The Tulgey Wood and The Treacle Well", when the White Rabbit is tricked by the Cheshire Cat into reciting the whole poem on the Jabberwocky. The creature, which is apparently summoned when the poem is recited, appears and begins to chase down the Rabbit, scaring off Mary Ann in the process. The Cheshire Cat calls out to the White Rabbit and genuinely seems to be leading him to safety; unfortunately, the Cat sends him into the Queen's garden.