Thanks to WonderWaseda for the inspiration!
One of the comments from WonderWaseda made an interesting point:
For anyone who hates the character of Ultimecia, or hates the R=U theory, consider one thing. What the hell is up with the boss [Griever]? Now, don’t tell me the standard explanation that Ulty brings it out of Squall’s mind or whatever. We have a situation here where the player named a pendant on the main character, already a weird and unprecedented thing in a FF game (as far as I know), and then you fight this as part of the final boss fight? Why does everyone ignore how weird this is? Why is this in the game? Why can you name the second form of the final boss? Unprecedented.
That place where you name Griever (with the Aura draw point I love it) is after an intense moment with only Squall and Rinoa. I have covered this in other posts, but I want to repeat it until it gets the attention it deserves. In FFVIII you can only name Squall and Rinoa, the GFs, and…. Griever. Why can’t I name Zell? The main two characters are for a love story may be, but intentionally denying the player the ability to name the characters comical vulgar names is something I noticed right away.
Think about this from a postmodern perspective. What does this moment mean for the real player, outside of the game? When the player names [Griever], the player is reacting to Squall finally opening up to Rinoa, to him revealing thoughts about himself. Let’s all forget about the guide, forget that we know what will happen. This is a tender moment. Why is this moment reflected back at the player in the final boss fight? Why is the final boss mocking, not Squall the character, but mocking the real player, in reality, who chose the name of [Griever]?
Griever is Squall’s necklace, the same one that turns into the game’s boss. This is also one of the supporting theories for the Rinoa is Ultimecia theory:
Griever is the big one. I find it hard to believe that Ulti would use a newly created GF in the biggest battle of her life. She would use her best and most compatible one. The name is something Squall and Rinoa knew. Additionally, both Tiamat (corrupt Bahamut) and Omega Weapon (based on Ultima Weapon) are seen at her castle.
The idea is that Ultimecia takes Griever from Squall. Whatever Squall named his pendant, supposed Rinoa as Ultimecia will remember it. You can name a lot of different summons, as they are yours. And there’s no indication that Griever would one day be a summons. So the idea is Rinoa, as Ultimecia, created a summon on the spot. It makes a lot more sense than Rinoa taking the image from Squall’s mind. Or does it? As a sorceress, she can enter into people’s minds. In fact:
Griever is not only a symbol of the virtues Squall values but is also Squall’s interpretation of the ultimate Guardian Force. During the final battle, Ultimeciadraws Griever from Squall’s mind, bringing Squall’s perceptions of the being into existence to fight the party. This is made more explicit in the Japanese version where Ultimecia claims to summon the one entity Squall views as the most powerful whose power would increase the stronger Squall envisions it, meaning this manifestation of Griever is powerful purely because of his importance as a symbol in Squall’s mind. It could even be seen as Squall needing to overcome a part of himself to win the battle.
It’s not necessary for Rinoa to be Ultimecia use Squall’s memories.