all i know is how to get the regis and latios or latias.
Yes, it is
That's not possible latias and latios are caught in ruby, sapphire or emerald you must trade them to firered to get them.
No only latios and latios can mate.
Latios
Second question: Latios
ruby=groudon+raquaza+latios+the regis sapphire=kyogre+raquaza+latias+the regis emerald=raquaza+groudon+kyogre+latios or latias+the regis
For Pokemon ruby you can catch the three regis, rayquaza, groudon, and latios/latias. In sapphire you can catch the three regis, rayquaza, kyogre, and latios/latias. However, in emerald you can catch kyogre, groudon, rayquaza, the three regis, and latios/latias.
groundon, latios, rayquaza and the three regis.
regis groudon rayquaza latios and latias deoxys
the regis rayquaza latias latios and kyoger
emerald:Beat Battle frontier/tower or Catch Regis
all i know is how to get the regis and latios or latias.
The regis(except regigegas),raquanza,groundon,kyogre,and latios or latias
Rayquaza, Kyogre, Groudon, The Regis, Latios and Latias, and a lot more.
i have got the both of them but i want two of the three regis (registell, regirock or regiice).
no it is not possible