"The Roman goddess of luck, she turns the Wheel of Fortune. She is believed to have originally been a fertility goddess. Her Roman counterpart is Tyche."
—Shin Megami Tensei: Strange Journey compendium
Shin Megami Tensei IV
Fortuna is one of the first special fusions available to Flynn. She can be summoned through a combination of Napaea, Dwarf and Melchom. Fortuna can teach Flynn the Zan, Sukukaja and Media skills through her Demon Whisper.
Fortuna appears in the Challenge Quest, "The Cauldron." Acting as on behalf of her friend Brigid and the gods of Danann, she went into Naraku in order to retrieve Dagda's Cauldron, which was stolen by the angels. Flynn can find her in Naraku - Excavation Worker Quarters. She explains that Dagda's Cauldron is mistakenly called the Holy Grail and that they went into the enemy stronghold to retrieve the stolen object, but everyone except her had been killed by the angels. Being too injured to take the cauldron back herself leads Fortuna to ask Flynn to take it in her stead. Should it get broken he can come back and get the cauldron fixed.
Shin Megami Tensei IV Apocalypse
Fortuna is the boss in the Challenge Quest "Secure Transport Route," where she has blocked a path for supplies in order to eat the Hunters who come to remove her.
"The Roman goddess of luck, she spins the Wheel of Fortune. She is believed to have originally been a fertility goddess. Her Greek counterpart is Tyche."
—Persona 5 background
Fortuna is the fifth Persona of the Fortune Arcana and can only be obtained with fusion in the Velvet Room. She is the first Persona to learn the Touch n' Go, Amrita Drop and Evade Elec skills. When itemized through Electric Chair execution, Fortuna yields a Fast Heal skill card.