Gogo’s a mysterious character. No one really knows who Gogo is, or even their gender. But it hasn’t stopped fans from guessing. Some theories involve Siegfried, Banon, General Leo, Emperor Gestahl, Cid, Baram, Relm’s (or/and) Gau’s mother, or even Gau from an alternate dimension. But the most popular theory with the most traction, besides Gogo being Adlai Stevenson, is:
Daryl/Darill is Gogo. Darly/Darill:
She was Setzer Gabbiani‘s girlfriend and owned the Falcon, an advanced airship model. Attempting to test the ship’s limits in an experimental flight, she asked Setzer to take care of it if the worst should happen to her.
Setzer jokingly challenged her to an airship race around the world in his Blackjack in order to keep an eye on her. Seeing that he could not keep up, he let Darill proceed with her flight, asking her to be back by sunset at their favorite meeting spot. Darill never returned, and a year later, Setzer found the wreckage of the Falcon in a distant valley. He managed to recover the wreckage, repaired the airship and laid it and Darill to rest inside a tomb near Kohlingen.
But did she really die?
Setzer finds Daryl/Darill’s airship, but not her body. Perhap she could still be alive. So then fans presuppose a Zone Eater swallowed Daryl/Darill, where she remained until your party finds her.
The “distant land” Daryl/Darill crashed on during her airship race with Setzer could have been Triangle Island.
Gogo can equip female-only equipment and the gambler-exclusive weapons. While a mimic, they cannot equip all items, as
their equipment is limited to rods, some daggers, maces, universal shields, and lightweight caps and robes.
Fans also allude to a scene between Setzer and Gogo that heavily implies the latter is, in fact, Darly/Darill. This scene does not exist.
The theory is popular enough for Kitase to have debunked it in an article with Kotaku:
“That’s probably not true,” Kitase said, speaking through a translator. “I don’t think there’s any background setting like that. If that’s true, then because Daryl had that beautiful ending, if [she] ended up being Gogo, that would just destroy all that.”
When asked if Gogo has a secret identity, Kitase responded no. Gogo is who Gogo is, a mime.
It’s possible that this is the same Gogo from Final Fantasy V, as it can be postulated that Gilgamesh is the same character throughout the Final Fantasy series. Both appear through the Void.