Latios is blue/grey, and is known to resemble a jet, both in appearance and in speed. He is also extremely intelligent, able to understand human language.
Like his father, Latios died as a result of saving Alto-mare from utter destruction. In his place, a Soul Dew was produced, as a key to keep Alto-mare safe once again.
Many internet sites, forums and articles state that Latios was the first Pokemon to actually die in the Pokemon series.