Prof Haley

Walter "Prof" Haley is one of the Challengers of the Unknown.

History
Prof Haley and his team introduced themselves to the security guard so they could watch Batman's new movie Batman Again. The guard checked his list and allowed them into the movie theater. As the Teen Titans entered through Raven's portal, the Challengers were in their seats, so Raven opened a portal and sucked the Challengers of the Unknown through leaving them stuck in the void.

Appearances

 * Teen Titans Go! to the Movies
 * TV Knight 4