Legends

There r 12 legendary pokemon in HG & SS, here is a list:

Lugia & Ho-oh

You can catch both Lugia and Ho-oh in HG & SS, however the mascotte of the game will be catchable after the whole part at goldenrod city, at lv 45, the other will be catchable after u got the silver/rainbow wing in pewter city. Ho-oh is catchable at the tin tower, and Lugia at the whirl islands.

Legendary beasts

Raikou, Entei and Suicune will all be catchable in HG & SS at lv 40, after you freed them in ecqruteack city (something like that), the beasts are roaming around.

Mewtwo

It is confirmed Mewtwo is catchable in HG & SS, nothing is known about it, I think its catchable in Cerulean Cave.

Weather Trio

Kyogre is catchable in HG and Groudon in SS at lv 50, if you bring them together Rayquaza is catchable at lv 50

Three dragons

If you bring the movie arceus to HG/SS there comes a new area, The Shinto Ruins (a link between Shinnoh and Johto. cynthia appears and you may choose between Dialga, Palkia or Giratina all from an egg at lv 1, Dialga knows Metal Burst, Palkia Hydro Pump and Giratina knows shadow sneak, they all have their own orb, adamant, lustrous, griseous.


Other Legendary pokemon
There are only a few pokemon which arent catchable with Platinum, HG & SS, there are events, if you dont count the big events, you only need Mew, Celebi, Latios, Latias, Deoxys (jirachi was a quite big event) and the Sinnoh are all there.
I think they should put Latios and Latias in, one for HG and one for SS, Celebi in ilex forest with an event, mew with an event in kanto and deoxys, I dont know, just like bith island in FR and LG

Woah, the only sprites that have changed are lugia and entei, but Lugia's is looking SWEET!!!!

i dont believe it....i was hoping they'd change suicunes sprite...that red eye makes it look stupid

TDO ur a pic genious. Thanks for the images.

i forgot to say, only the sprites of Lugia and Entei are added, and the three dragons didnt change, the other sprites arent revealed yet

so theres still a chance they've changed suicune's sprite?

There is a very big chance, They changed the birds, raikou, entei (Raikou and Ho-oh's sprite arent here, couldnt find them saw them in a video) so I know they change the sprite of Suicune

Yeah! Suicune new sprite!!!!

THAT WOULD LOOK COLLER THAN THE WORLDS LARGEST DS XD

that isnt playable

Only with a giant pen it is..XD

Anyone saw the suicune new sprite? Its really cool!!!!!!!!!

oh yes i saw it, and yes its awesome:D

i didn't know there ws a new suicune sprite. Where can you see it?

On pokemon news, one of the 3 trailers(yt video)