There is no Indigo. There's the Indigo League in Kanto, where Victini is unobtainable, but that's all I can imagine.
Victini, as of right now, is only obtainable in Pokemon Black Version and Pokemon White Version.
first u have to get the liberty pass in an event and then go to liberty garden and defeat team plazma and ull get victini
Go to indigo leaders and go to Giovanni's gym (very last one on indigo leaders map) and there he is. He is very hard to find.
NERD!
underwaterzone
Entei can be found in Nimbasa City in Pokemon Indigo.
They are not in this version of Indigo yet. You could get it in by hacking, but you may get banned if you do that.
So far you must use firebug to get deoxys on indigo.
Indigo is a dark blue color which derives from the indigo plant. It is also one of the colors of the rainbow. You can find pictures of indigo in art books and online.
Find It In League Champion - Steven on the online Pokemon Indigo
You will find the elite four in Indigo plataue
you can find him on almost every map
I doubt you will find Giratina on Pokemon indigo as it is not a generation 1 Pokemon (it isn't one of the first 151 Pokemon species)