I say it's oblivion, but somebody told me it isn't, so yea.
The BEST keyblade is based on opinion, although the strongest (in terms of strength) is the Fenrir Keyblade, obtained after you defeat Sephiroth.
there are two ultima and ferir weapons
Only in Kingdom Hearts 2 does she have a Keyblade. In Kingdom Hearts, she's unconscious for most of the game.
You cannot get Mickey's Keyblade in Kingdom Hearts II.
no you cant
In both Kingdom Hearts and Kingdom Hearts 2 the first keyblade used by Sora is the Kingdom Key.
In order to obtain the Fenrir keyblade, you must defeat Sephiroth.
I don't think you can
U don't
on Kingdom Hearts 1 i have no clue but on Kingdom Hearts 2 after you beat sephiroth go talk to cloud and he will give you a keyblade called Fenrir
You can't. The mushroom keyblade is an extra in Kingdom Hearts2 Final Mix.
There are no secret bosses. What you see is what you get.