No, But if you want an easy dungeon go for the starting one!
entei
There is no dungeon called final island, if you mean western cave then the answer would be mewtwo
Crevice Cave is an area in Pokemon Mystery Dungeon. In order to beat the area you have to rescue Scizor.
bagon,shelgon,salamence, and the other dragon Pokemon
yellow,purple and blue
A dungeon is a cave on pokemon mystery dungeon. It is a level with a series of floors/rooms and the object is to get to the end of the dungeon.
In Aegis Cave
In solar cave
There are loads in western cave.
entei
Beat Jirachi
30
In solar cave you get there after you beat rayquaza
he's in western cave
aegis cave
there is a mission you need to do
20