Diego Velazquez (ディエゴ・ベラスケス, Diego Berasukesu) is an elderly student of Tres España's Alcalá de Henares and the secretary of the school's Student Council. He is also the owner of the Testamenta Arma Crus Temperantia Novum, which symbolizes "Temperance".
Velasquez is somewhat aloof from the world but can be helpful to others most of the time.
He was a veteran of the recreation of the Battle of Lepanto before becoming Felipe Segundo's subordinate. As of the present, aside from being a war veteran and a high-ranking student, he is also a famous president of an eroge company called "Team Velazquez".
- Testamenta Arma: Crus Temperantia Novum - Upon the activation of the Testamenta Arma Crus Temperantia Novum, the power of enemy abilities that are active or are activated within an area around the Testamenta Arma will be decreased to a certain fraction of its original power determined by the number of hits the targeted ability has. For example, an enemy ability that has six hits will be weakened to one-sixth of its original attack power.