Once, the Sphinx got an order to punish Funi. He said he would take him to the Catacombs to scare him, but instead, they went to the Demon Nagi Luna's cell. When the Sphinx forced Funi to open the Quiet Box to let the Demon out, Nagi Luna instantly took control over Funi and attacked the Sphinx. The Sphinx managed to kill Funi even though he fought with unnatural strength and furiosity.
- Keys to the Demon Prison (Fablehaven)