Raikou, Entei, Suicuine, Lugia, Ho-oh, and Celebi.
-also zapdos, moltres, articuno cane be found after getting the national dex.
groudon and kyogre can be obtained after first going to prof. oak and getting a starter Pokemon, going to mr. Pokemon he'll give you something like an orb whos color depends on what game you have, then going to the tower by the safari zone
The Legendary Pokemon in Ruby are Kyogre, Groudon, Rayquaza, Deoxys, Jirachi, Latios, Latias, Regice, Regirock, and Registeel.
Use Action Replay
You can catch Lugia, and evolve Growlithe into Aracanine, which is not considered legendary, but literally has the title of Legendary Pokemon. Hope this helps!
Dialga does not evolve. All legendary Pokemon don't.
One of the last things to do is battle Red at Mt. Silver. You can also try to catch the legendary bird Pokemon throughout Kanto. You could also catch the legendary dog Pokemon throughout Johto and Kanto.
squirtle, woreturtle and blastoise
keep training, all legendary Pokemon fall in time
Abandoned tower hoho sefoam islands lugia and others hop around
all legendary pokemon is available............
The names of the Legendaries in Pokemon Diamond are Uxie, Mesprit, Azelf, Dialga, Palkia, Heatran, Regigigas, Giratina, Cresselia, Phione, Manaphy, Darkrai, Shaymin and the rarest of all Legends in Diamond; Arceus.
beat trainer red in mt silver
All the legendary Pokemon are in the city figure it out and don't all was use this website for Pokemon ok. and it will actually cost 5 dollars to know were all the legendary pokemons are ha haha just kinnding all the legendary pokemons are in the middle of the island