“'Dude, she just saw you crying over your stuffed Jackalope!' The other boy snorted. 'I WASN'T CRYING!'”
—Lex and Rex Dizznee, in Book 5: Lodestar
Mentioned first on page 215 of Lodestar (hardcover), Harry the Jackalope is Rex Dizznee's favorite toy. When Harry is introduced, Bex Dizznee was threatening to tear off the mythical creature's antlers, and later she decides to give Harry a mudbath. Rex desperately tries to get his stuffed animal back by not only lunging at Bex, but threatening her as well. This threat, however, was never followed through on, as all of the triplets realized Dex's friends were there to spend the night.