Isaac

Isaac (アイザック) was a one of the top students in Midgar Academy and Cid Kagenō's classmate he cheats off during tests. However, it is revealed that he was an insider working for the Cult of Diablos.

Appearance
Isaac was a handsome man with dark green hair and yellow eyes.

Personality
Isaac normally presents himself as a highly intelligent student with very calm personality at school. In reality, Isaac has shown to be a very treacherous cold-hearted individual with deceitful nature that he won’t hesitate to manipulate anyone, even his friends, if necessary, in order to make his task easier.

Despite his perceived intelligence, however, Isaac was shown to be a wary hypocrite as he's being cautious of others when he keeps voicing his suspicion of Suzuki's secretive behaviour and making his team to believe that he's leading the Special Attack Squad into a trap, even though he is the one luring them to their doom since he's actually a mole for the Cult.

Like most people who work for the Cult, Isaac had confident in himself and his own abilities. However, due to his overconfidence, he seriously underestimated "Suzuki", and this eventually led to his death.

Background
Isaac was the son of a noble family with connections to the Cult of Diablos and entering the Midgar Royal Spellsword Academy to operate as an insider by becoming a student for about a year, eventually ascending into a model student; all while keeping his true loyalties hidden from everyone outside of his affiliates.

Powers & Abilities
Isaac was considered one of the five best students in Cid's class who becomes a model student due to his intelligence, even Cid Kagenō himself always cheats on all of his answers during tests, although he answered the test that could adjust his average scores.

As a Cult's agent, Isaac is highly adept at manipulating people when he is deceptive enough to make people believe his baseless accusation, to which even the entire student was completely in the dark about him as an insider man until he revealed himself when trapping his own team.

Genius Manipulator
Isaac was intelligent and cunning as he tended to come up with twisted schemes of ingenious and imaginative plans. This includes spreading deliberate propaganda about Shadow Garden's infamy in order to make every student believe in him and being highly deceptive. He demonstrated his deceptive nature by managing to successfully manipulate his friends from discovering his true affiliation towards the Cult during his time at the academy which he won’t mind for luring his team into a Cult's trap.

Trivia

 * Isaac's family may possibility be affiliated with a secret society which have ties to the Cult of Diablos.