The strongest Pokemon ever is Mewtwo. The said Pokemon is regarded as the strongest because it is a psychic and uses telekinesis and telepathy to fly and speak respectively. Mewtwo uses the abilities to shield itself or throw opponents while fighting. It can regenerate and recover quickly from near-fatal injuries. The height of the Pokemon is 6’7”. You can read more about Meotwo at http://www.ask.com/wiki/Mewtwo.