There is no town called dude in green suit but you might be thinking of Eterna city but the gym leader there is a gril so I don't know. Sorry I couldn't help much. :(
Well, I'm not sure why you're Special Attack training a Leafeon, they're a much better physical attacker, but suit yourself I would suggest putting a GBA Pokemon game in to the GBA slot in your DS and then going to the abandoned Chateu and going in to the room that has the eye paintin on the wall, in there you should find Gengars and Haunters, both of which are good for special attack EV training
The suite key is well hidden. When you enter the resort area from Pastoria, go left one step and it should be there. If not, use your item finder in front of the door and it should react.
suit
first you have to go to the lakeside hotel near paistoria city and then when you are near the reception on the side that is a road (not at the beach) you use the poke app DOWSING MACHINE then when you touch the poketech you will see a small dot then you go near it then you press the a button in front of the dot then BAM!! you have the suit key.
in solaceon town where a old man in a blue suit is
There is no town called dude in green suit but you might be thinking of Eterna city but the gym leader there is a gril so I don't know. Sorry I couldn't help much. :(
In Pokemon Diamond Pearl and Platinum, a man in a green suit can be found in the Pokemarts. He is not in any specific city. He is just in every Pokemart.
after you get out of the lobby, go to the corner of you and use your dowsing map
No, unless you happen to be using a third-party hacking product that happens to cause that to happen.
if you have completed the national pokedex go to Canalave city in diamond pearl and in platnum.go to the blue store.there be will be a guy in a green suit waiting for you he will give you the azure flute.
you dont , try searching around the hotel with the item searcher app
you have to have rock climb to go all the way to the left then use rock climb and go to the right all the way and use rock climb again
On Pokemon platinum i know a cheat without action replay Press L+R when going to pokemonmart and they will be a guy in green suit NOTE:This may not work but it worked on mine so try again and again This works a t night
you can get the rocket suit by going to the studio in the tunnel. a rocket will be there and will assume you are a new recruit. he will give you the last rocket suit there.
a girl and a boy and rarely a green suit boy that gives you event items like the members card one right now on wi-fi through August 3 to September 13.
Becauce in platinum you can get palkia (which you can only get in pearl) and dialga (which you can only get in diamond) and giritina. And you can also go underground and play capture the flag and make secret bases. those are not half of the reasons platinum is just better