Hall of Fame and then you can adventure through new places.
you can do is cat the 3 legend Pokemon
you cant. but you can poketransfer it after beating alder from a friend hope i helped!
Alder is only in pokemon black or white.
after beating alder and seeing or catching all Pokemon
After beating Benga in the White Treehollow, he will give you a Shiny Dratini however you will have to get it from him at Alder's House in Floccesy Town.
trainer n he beats alder
When you first beat the Elite Four, you will find that N has beaten the champion Alder, but after beating N in his castle, he will fly away on Reshiram and Alder will return to being the champion. But I personally (others agree) think that N is the champion. After all, he did beat Alder. But if you want fact and not opinion, Alder is the champion.
shoot alder with a gun
at the end of it
Yes
Alder and Cynthia(from platinum)
It's on Twist Mountain where Alder will give it to you.