The non-event legendaries you can obtain are Mew, Deoxys, Articuno, Zapdos, Moltres, Raikou, Entei, Suicune, Regirock, Regice, Registeel, Regigigas, Latios, Latias and Arceus.
Ho-Oh, Lugia and Celebi are event legendaries.
By event legendaries you mean you get the wings in earlier versions?
And an obvious question,where to find arceus?
Is it possible to get pedobear and idiot in the game?