Lugia is the Diving Pokémon and the star Pokémon of Pokémon Soul Silver. As such, the way you discover it in Soul Silver is through obtaining the Silver Feather after beating Team Rocket. With this, when you go to Whirl Islands and get to the bottom, you will encounter Lugia at Level 45.

If you are playing Heart Gold, Lugia is also obtainable at the Whirl Islands, but you need to obtain the Silver Feather from a person in Pewter City. Once you have it, you can go to the bottom of Whirl Islands and Lugia will be there, this time at Level 70.

HeartGold: Lv. 70	SoulSilver: Lv. 45

#250 Ho-Oh

Ho-Oh is the Pheonix Pokémon and the star Pokémon of Pokémon Heart Gold. As such, the way you discover it in Heart Gold is through obtaining the Gold Feather after beating Team Rocket. With this, when you go to the Tin Tower in Ecruteak City and climb to the top, you will encounter Ho-Oh at Level 45.

If you are playing Soul Silver, Ho-Oh is also obtainable at the Tin Tower, but you need to obtain the Gold Feather from a person in Pewter City. Once you have it, you can go to the bottom of the Tin Tower and Ho-Oh will be there, this time at Level 70.

HeartGold: Lv. 45	SoulSilver: Lv. 70

#245 Suicune

Suicune is somewhat different to the other Legendary Beasts in that it does not roam Johto in the manner Entei & Raikou do. Instead, it is a stationary legendary. However, before you can get it, you must chase it around. At some points in the game, you will meet Eusine and he will follow you as he is also tracking Suicune. Suicune, like Entei & Raikou is released into Johto when you access the basement of the Brass Tower.

Suicune is seen in the following places and you must follow it if you wish to capture it. First, it will be found in the north of Cianwood City. After you encounter it there, you will shortly find it outside the entrance of Mt. Mortar in Route 42. Once you find it here, it will leave Johto and head to Kanto where you will see it in Vermillion City soon after you arrive. Next you will see it in Route 14 where it will escape for the final time to be found outside Bill's House in Route 25. This is where you battle Suicune.

Lv. 50

#144 Articuno

Articuno is one of the legendary birds of Kanto. Unlike in Gold & Silver, Articuno is obtainable in the wild in Pokémon Heart Gold & Soul Silver. Following on from its location in Fire Red & Leaf Green, Articuno can now be found deep within the Seafoam Islands. It is at the higher level of Level 60 so be prepared

Lv. 60

#145 Zapdos

Zapdos is one of the legendary birds of Kanto. Like Articuno & Moltres, it is now obtainable in the wild in Pokémon Heart Gold & Soul Silver. Like in FireRed & LeafGreen, Zapdos is findable just outside the Power Plant in Route 10 of Kanto. It is also at the higher level of Level 60 so be prepared

Lv. 60

#146 Moltres

Moltres is one of the legendary birds of Kanto. Like Articuno & Zapdos, it is now obtainable in the wild in Pokémon Heart Gold & Soul Silver. However, unlike the other two birds, Moltres is found in a completely different place. In these games, Moltres will be found within the Silver Cave, on the boundaries of Johto & Kanto. It is also at the higher level of Level 60 so be prepared

Lv. 60

#150 Mewtwo

As with FireRed & LeafGreen, after you complete the majority of the game, you will gain access to the Cerulean Cave. Deep within the cave, like in FireRed & LeafGreen, you will find Mewtwo. It is at Level 70 so be sure to bring your strongest Pokémon.

Lv. 70

#382 Kyogre & #383 Groudon

Kyogre & Groudon are both available within this game. To access them, you need to obtain the Blue Orb if in Heart Gold or the Red Orb if in Soul Silver. These orbs are found from a man in Route 27 after you have obtained the National Dex. With these orbs in hand, you need to head to a cave in the new area west of Cianwood. Traverse the cave and you will find Kyogre if you're playing Heart Gold or Groudon if you are playing Soul Silver. They are at Level 50 so be prepared. Unlike Lugia & Ho-Oh, you cannot get both Pokémon in one game so you'll have to trade to get both.

Heart Gold	Soul Silver
Lv. 50	Lv. 50

#384 Rayquaza

Rayquaza is a legendary Pokémon whom you'll have the most trouble getting. To get Rayquaza, you have to take the Green Orb to the same cave you obtained Kyogre or Groudon within. However, to get the Green Orb, you need to have both Kyogre & Groudon. This includes the one you captured in your game and one you obtained in a trade, but captured within the Heart Gold or Soul Silver game. Once you have these two Pokémon, go to Professor Oak and show them to him. He will give you the Green Orb.

Lv. 50

#483 Dialga, #484 Palkia, #487 Giratina

f you bring over the special Arceus given away for the 12th movie, you will unlock Dialga, Palkia or Giratina. This is done by going to the Shinto Ruins, hidden somewhere in Johto with Arceus on your team. You will encounter Cynthia who will tell you that Arceus has the ability of creating certain Pokémon. These Pokémon are Dialga, Palkia & Giratina. You have a choice of the Pokémon you can create but you can only create one so choose wisely. They are at Level 1 and are holding their respective orbs so you won't have to worry about their strengths.

Lv. 1	Lv. 1	Lv. 1

#243 Raikou

Raikou is one of the first Roaming Pokémon that you will meet. When you enter the basement of the Brass Tower, it, along with Entei & Suicune, will quickly leave the area. From here, it is roaming the land of Johto. It is at Level 40 so be prepared.

Lv. 40

#244 Entei

Entei is one of the first Roaming Pokémon that you will meet. When you enter the basement of the Brass Tower, it, along with Raikou & Suicune, will quickly leave the area. From here, it is roaming the land of Johto. It is at Level 40 so be prepared.

Lv. 40

#380 Latias

Latias is another one of the roaming Pokémon. When you have obtained the National Pokédex, both it and Latios will begin roaming the land of Kanto. Following the same tactics as before, you should be able to narrow them down. She is at Level 50 so be prepared.

Lv. 50

#381 Latios

Latios is another one of the roaming Pokémon. When you have obtained the National Pokédex, both it and Latias will begin roaming the land of Kanto. Following the same tactics as before, you should be able to narrow them down. He is at Level 50 so be prepared.

Lv. 50