Satanael, also known as Sataniel or Satanail, is an archangel mentioned in the second Book of Enoch that lead the fallen angels that rebelled against God, by refusing to bow to the human Enoch, leading to his imprisonment. Due to his name and role, he is considered an interpretation of Lucifer.
In some Gnostic traditions, Satanael is said to be an angel that once served Yaldabaoth. He rebelled when he realized that Yaldabaoth was not the true God and granted humanity the knowledge to liberate themselves from Yaldabaoth. In other traditions, he is said to have created the material universe as a second heaven to rule over and became the "God" of the Old Testament, making him an interpretation of the Yaldabaoth.
According to the beliefs of the Cathars, a notorious medieval heretical creed, Satanael (or Satanel) was the angelic name of Satan before Michael the archangel removed the -el suffix (signifying the loss of his angelic nature) and sealed him in Hell. In this interpretation, Satanael is the radical opposite of God and the ruler of the material world.
During the final events of the Monolith, Spooky will appear at the ruined transmission tower, possessed by Satanael, who plans to take over now that Azazel and Shemyaza are gone. Taunting the party, he suggests they "thank him for letting them die by their friend's hand," which he uses as a puppet and human shield in the boss fight.
"An archangel who is said to be the form of Satan before he fell from Heaven. The second son of God, he rebelled against Him for freedom and bestowed free will and chaos upon humanity."
Satanael's Unshaken Will skill has been changed to Tyrant's Mind, an exclusive skill that strengthens all attacks by 25%. This skill bypasses the x2 multiplier set up between other Boost or Amp skill. He has also been given the trait Pagan Allure, which further strengthens all magic attacks by 50%, but it follows the x2 limit.
Light Phys attack that pierces to the back row. (1 enemy) Stronger in Boost.
Light Curse attack. (1 enemy)
Raise critical rate for 2 turns. (1 row)
Light Phys attack, with medium chance of Sleep. (1 enemy)
Raise damage dealt when attacking before all enemies act.
Medium Curse attack. (1 enemy)
Medium Phys attack that pierces to the back row. (1 enemy) Stronger in Boost.
Medium Phys attack, effective on Bind, but will remove binds. (1 enemy)
Medium Curse attack. (All enemies)
Medium Phys attack, with high chance of Poison. (1 enemy)
Heavy Curse attack. (1 enemy)
Return from Yomi
Medium chance of HP restore when near KO.
Heavy Phys attack that pierces to the back row. (1 enemy) Stronger in Boost.
Heavy Curse attack. (All enemies)
Severe Phys attack that pierces to the back row. (1 enemy) Stronger in Boost.
Satanael as he appears in Card Summoner
Satanael summoned in Persona 5
Satanael in Persona 5
Satanael in Persona 5
Satanael shooting Yaldabaoth in the head in Persona 5
Satanel's compendium background in Persona 5
Satanael as he appears in Persona 5 The Animation
Satanael in Persona Q2: New Cinema Labyrinth
In Other Languages
Satanael's role and summoning in Persona 5 is based on the series' interpretation of Lucifer, where he is summoned to champion freedom and chaos against the tyranny of Yaldabaoth's order. His summoning for the final battle even has him do the pose of Kazuma Kaneko's demon Lucifer artwork from Shin Megami Tensei II.
Satanael's fusion requirements in Persona 5 are not as long a list as the requirements for Izanagi-no-Okami, but make up for it in sheer expense; requiring anywhere from 800k to over 1 million yen to re-summon the component parts alone and not counting the extra money needed if the fusion is done under its base level of 95.
Satanael's Tyrant's Mind is the only "Amp" skill that can overcome the 2.0x damage limitation in the game, although there are traits that overcome it too.
Satanael's Trait, Pagan Allure, has a 50% amp on all magical abilities, although this trait doesn't overcome the 2.0 limit, it can be used to overcome it using Tyrant's Mind and Magic Ability, reaching a 2.34x damage in up to 6 different magical skills.