no it isn't
you cant catch mewtwo in Pokemon platinum peral diamond you can in Pokemon heart gold and solsilver in canalave cave
You'll need to trade for it.
Ho-oh, Lugia and mewtwo (you cannot catch mewtwo in gold, you have to trade it from red, yellow or blue) Tyranitar however is much stronger than those pokemon ^
Yes. With the time machine in gold.
You can't you need to trade him from Pokemon red,yellow or blue.
mewtwo is secound would be mew.
you have to catch mewtwo and unlock the gold and silver island
red blue yellow pokemon silver gold crystal
Mew, Mewtwo Moltres, Zapdos, Articuno, and Cyndaquil.
You'll need to trade for it or use the GameShark.