It's always different parts or names. :/

Jenova looks like a normal person, only sort of mutilated and without a head. Sephiroth just used different parts of Jenova's body to create monsters for you to fight. After you defeat the first Jenova on the ship to Costa del Sol, the thing on the ground is her arm, though it looks pretty messed up.

This is Jenova in Final Fantasy VII

and this


in Advent Children

....?.......

jenova is pretty fucked up
all i know is:
1)it's a girl
2)its "a calamity that tried to destroy the earth"

She's a mavole.

i'm sorry what the heck is a mavole

This is Jenova in Final Fantasy VII

and this


in Advent Children

I'd hit it.

A head with tentacles for hair and shiny red skittle for an eyeball.

in other words its a freak

A mutated fairy whore!

A mutated fairy whore!

another way of explaining how it looks
when you fight JENOVA ABSOLUTE its a big ball, obviously let itself go!

Marilyn Manson

Actually, this is how it looks like in FF7, without the armor :

And it is not a girl, though it looks like. It is said during FF7 that Jenova was a life form from outer space, able to take the Cetra's form (they look like Humans). Jenova's not even a fully conscious being, that's more likely an intergalactic virus.

Yet it is f*cking hot in Advent Children. (I reinsert the pic)

Marilyn Manson

i thought jenova's a robot.lol