Entei, Suicune and Raikou
Wigglytuff has new friend areas when you get an issue of the PKMN news about new friend areas, and one of those friend areas are the Sacred Field
ITS ENTEI
In blue or red, it's in fiery field.
In Joyous tower. But i recommend you to recruit a Combusken in fiery field
Go to northern field where suicune is at.
You beat Entei in Fiery Field. NOTE: You'll need Surf.
Sacred Field - for all 3 dogs
No, you can not get Lucario in Mystery Dungeon Blue.
Yes there is a unknown dungeon in Pokemon blue mystery dungeon! You'll have to connect with your friends if you want to go there
nope
you can't trade on Pokemon mystery dungeon OK
yes all Pokemon evolve in Pokemon mystery dungeon blue rescue team after you beat Rayquaza and legendary Pokemon don't evolve.