Regé-Jean Page hit the L.A. premiere of “Dungeons & Dragons: Honor Among Thieves,” where he spoke to “Extra’s” Melvin Robert. He dished on his “annoyingly perfect” superhero character Xenk and playing off co-stars Hugh Grant, Chris Pine and Michelle Rodriguez. He also reacted to being dubbed the world’s most handsome man, according to science! “Dungeons & Dragons: Honor Among Thieves” is out March 31.