By leveling up; Psychic and Dragon Pulse (Power 90 + STAB on both)
In Generation IV, Psychic is learned at level 65 and Dragon Pulse at level 70.
In Generation V, Psychic is learned at level 60 and Dragon Pulse at level 80.
By Move Tutor, the strongest move is Draco Meteor (Power 140 + STAB)
By TM, the strongest moves are Giga Impact and Hyper Beam (Power 150 on both)
Chat with our AI personalities
The strongest is Focus Punch with 150 power, but is not a good move unless you are behind a Substitute.
The move is Doom Desire
earthquake
meteor mash
latios,latias, mightyena,rayquaza,poochyena,Maybe Gyarados can