@DrylickThe Gravity Children had the runes. Each one was given his/her own rune. Sora already had his, and the 20 others, meaning he needed the other seven, which was why he created Sleeping Forest. He didn't need to win against Kilik's group back then because he just needed the runes. He just now obtained the Sky Regalia and became Sky King, so I'd say he'd definitely gotten all of the runes by this point. Dr. Minami said he was having trouble with the other seven runes, and at that point, Kilik was also remembering their fight back then and figured out that he only wanted to get the runes from the other Gravity Children. He'd most likely already gotten Gazelle's, and Sleeping Forest had 7 Gravity Children in it, so he just needed to get their runes.
Also, Ikki's Storm Regalia isn't getting all of the eight cores combined into it, it's just getting those six whose powers defy gravity ("Wind," "Gem," "Thunder," "Fang," "Flame," "Rumble,"). And if you look at that diagram we've been shown of the Regalia, it shows the Sky Regalia in the middle, with the 8 Regalia circling it as they branch off of it, and then 2 other Regalia branching off from each of the main eight branching off from the Sky Regalia. There were 24 Regalia shown in the diagram, though, meaning that there are four extras. The First Generation Gravity Children probably had 3 Ring Road Riders, and then we know that Sora and Nike were both Wing Road Riders and had Bagram, so there were two of the Wind Regalia. Rune and Simca were both Ring Road Riders, so there must have been other one, who died, since Merlin is probably a Second Generation Gravity Child (the dark-skinned girl that Kanon fought).
Anyway yeah, Ikki's Storm Regalia isn't an AT Sky Regalia. It's still 2 cores short.
Edit: One post late.
I did not see that ass-whuppin coming. Can someone explain to me what the hell just happened?
Well, what I understood was that:
There were 28 original Gravity Children, which means, there were 28 original regalias. Each regalia had a rune inside, and once you get all the runes together, you release the Sky Regalia. Sora kiled/defeated most of them and got their regalias and runes. He put all the regalia cores into his Bagram (actually it looks like Minami was the one who did it and gave Bagram to Sora).
Then, Sora created Slepping Forest with the 8 remaining kings (himself included) and spread the rumor that, to release the Sky Regalia, you would need the 8 regalias, from the 8 kings (which, coincidentally, were all members of the original SF ^^). Actually Sora said they would need 8 regalias, because HE needed only 8 regalias, because he already had the rest of them. So he fought Kilik on purpose, to make the other kings (aka SF members) weaker during the battle, so he could get all the regalias, which he actually succeeded. The only problem was that Kilik destroyed his legs in the battle, which made his plan slow down for a while, until he could finnaly come back with his mechanical legs. Now he gets all the runes and the ultimate regalia, becoming the Sky King.
So, basically, everything till now was planned by Sora (except the part where he "lost" his legs to Kilik).
I guess that's it.
So that means, you could get the codes without assimilating the regalias into your regalia. That's what Sora did. Hmm..
I think the codes were given to the Gravity Children themselves. Either that or, yeah, they're in the READ data or some other part of the Regalia, which Sora has already obtained up to this point; otherwise, he wouldn't have been able to take control of the Sky Regalia and become Sky King.
By the way, how many people on here are aware that sora means "sky"? [Just trying to see who other than me sees the connection in him giving himself that name, and wanting to become "Sky King;" remember that the failed-experiment Gravity Children, like Sora, weren't given actual names, unlike Kilik or Rune, so they had to name themselves on their own. Kilik also thought of this after he finally became aware of Sora's true colors.]