Impel Down
Imp Hell Down
Imp is a common name type of Demon in many mythologies
So
Demon Hell Down
As in, a Hell to send Demons down into
I believe Impel Down was created by the Ancient Kingdom to imprison the Gorosei, which is why each floor can be connected to them, as has been speculated.
Blood Floor: Saturn (blows up heads)
Basilisk Floor: Mars (did... did Luffy beat up Mars grandson in Impel Down, or something?)
Desert Floor: Ju Peter
Flaming Floor: Warcury
Ice Floor: V. Nusjuro
The Gorosei were imprisoned, and, in order to escape...
They made a pact with the Sea Devil, Imu, thus explaining their loyalty to Imu. So, their powers would be more or less on-loan: without Imu, they most likely can't use their powers.
So, severing Imu's connections to the Gorosei is probably an important step to defeating them.
Imp Hell Down
Imp is a common name type of Demon in many mythologies
So
Demon Hell Down
As in, a Hell to send Demons down into
I believe Impel Down was created by the Ancient Kingdom to imprison the Gorosei, which is why each floor can be connected to them, as has been speculated.
Blood Floor: Saturn (blows up heads)
Basilisk Floor: Mars (did... did Luffy beat up Mars grandson in Impel Down, or something?)
Desert Floor: Ju Peter
Flaming Floor: Warcury
Ice Floor: V. Nusjuro
The Gorosei were imprisoned, and, in order to escape...
They made a pact with the Sea Devil, Imu, thus explaining their loyalty to Imu. So, their powers would be more or less on-loan: without Imu, they most likely can't use their powers.
So, severing Imu's connections to the Gorosei is probably an important step to defeating them.