Yes you can. You fight him right before you fight Dialga at the top of Mt. Coronet.
after you defeat Cyrus you can battle dialga then you battle the three lake Pokemon and move on to sunnyshore city. then you go on to defeat the elite 4.
after you battle Cyrus 4 the ledgendary trio with 7 badges, he will give u the ball
No, After U Defeat Him In Diamond/Pearl/Platinum U Defeat Him He Compleatly Dissapears
The final battle with Cyrus is held on the highest point of Mt. Cornet. He tries to summon the legendary Pokemon to rewrite the universe. Cyrus disappears after his defeat leaving Team Galactic to Saturn.
Cyrus is in the galactic building in veilstone
in platinum the first time you battle him is in celestic town and in diamond and pearl the first time you battle him is in his base in veil stone.
Get through Mt. Coronet and you will battle Mars, Jupiter and Cyrus. Then you will battle Diaga. Capture it in a Poke Ball or Something and you'll have Dialga! P.S. You can only do this when you have 7 Badges!!!!
Cyrus and his gang are located in Jubilife City in both Pokemon diamond and pearl. Cyrus leader of team Galactic is the antagonist of the games.
the second time, Cyrus is in mt coronet. he is somewhere call the Spear Pillar with the other galactic bosses. when you talk to them, they want to battle you and then your friend will come and fight with you. when you beat them you will also need to fight Cyrus. behind them is dialga
He only does in diamond, not pearl. Once you beat galactic boss Cyrus on spear pillar you will battle dialga with the music dialga and palkia battle at spear pillar!
you have to capture Dialga to do that you must go to spear pillar and battle boss Cyrus then captre it finally you can go to sunyshore city
Battle of the Diamond happened in 1795.