Alex Aiono Alex Aiono, Mallory Bechtel & Eric Johnson joins the cast of HBO Max’s ‘Pretty Little Liars: Original Sin’ as series regulars 3 years ago Alex Aiono (Doogie Kamealoha, M.D., Finding ’Ohana), Mallory Bechtel (Dear Evan Hansen on Broadway, Hereditary) and Eric Johnson (Fifty Shades…