Biblia Gakuenchou (ビブリア学園長)
Master Biblia is a Paladin-Class mage and is the headmaster who presides over the Biblia Magic Academy. (Source: Wikipedia)
Animeography
Trinity Seven
Trinity Seven: Nanatsu no Taizai to Nana Madoushi
Trinity Seven Movie 1: Eternity Library to Alchemic Girl
Trinity Seven Movie 2: Heavens Library to Crimson Lord