Prepare for the ultimate CELEB-BRATION with our amazing Celebrity Guests at FAN EXPO Philadelphia. SIGN UP. FAN EXPO Philadelphia Past Fan. Sign up to the e-newsletter for all Celebrity Guest updates. Comics. Cosplay. Gaming. Horror. He wants to make sure the “play” is evident when people cosplay. Now you do not need to make your appearance a secret. Special invited guests of the convention may request VIP seating. In exchange for donations, people can receive handmade items, thor costumes access to behind-the-scenes footage or a chance to be included in the series.