terra isn't in kingdom hearts 2. he is only in birth by sleep which hasn't even come out in English yet
In Kingdom Hearts 2: Final Mix+ he is a secret boss I think, but that is only in Japan too.
In both Kingdom Hearts and Kingdom Hearts 2 you must fly to different worlds using your gummi ship on the World Map.
You can access the World Map from most Save points, or you may be launched to the World Map after completing a zone if you are still finishing the main story.
The only difference between the two games is that in Kingdom Hearts you have to always re-complete each gummi battle to pass through it into the next world - in Kingdom Hearts 2 you only have to do each gummi battle once, they are optional from then on.
if you havnt finished all the worlds yet you have to and then you must talk with Sid at trasverse town. if you still cant try Google or try going through some of those warp hole things.
by beating all of the other worlds twice and returning to twilight town. go into the mansion and speak with the gang and they should put you in a teleporter or something.
With the World Cards.
You can only fight Terra in the Kingdom Hearts 2 Final Mix+, he is called "Enigma Soldier". Sorry.
You don't meet Terra in Kingdom Hearts 2, you meet him in Kingdom Hearts 2:FM, I think he shows up in the Cornerstone of Light in Disney Castle.
He isn't
I don't think you can.
Terra is one of the main protagonists in Kingdom Hearts Birth by Sleep.
You can only met him in KH2 Final Mix. How, I do not know
Kingdom hearts II final mix is an extended Japanese version of Kingdom hearts II with more bosses including Terra from birth by sleep and a bonus secret ending.
terra-xehanort or simply xexanort :)
2 of the main characters in kingdom hearts birth by sleep and birth by sleep final mix
Ventus, Terra, and Aqua
He is about 17 or 18 in birth by sleep
Roxas, or also known as Sora's Nobody. Kingdom Hearts 3 is titled as "358 / 2 Days" for the Nintendo DS.