Mewtwo is at Level 70 when you battle him. You should most likely use you highest level Pokemon that is around level 70.
he is level 70
Lv70
Probably Mewtwo, because you catch Ho-oh at level 40, and catch Mewtwo at level 70. Mewtwo is stronger, and a more powerful pokemon. Ho-oh won't be enough to take on Red, unless you train it.
The highest level Pokemon you can catch is a level 70 Mewtwo.
You catch mewtwo in the cerulean cave after obtaining all 16 gym badges (kanto and johto) Mewtwo is level 70 and knows guard swap, power swap, swift, & pchyco beam
In HeartGold and SoulSilver go to Cerulean Cave it is at Level 70.
catch him at lvl 70
You can't catch Mewtwo in Pokemon Diamond and pearl and also platinum. But you can catch Mewtwo in heartgold and soul silver
how do you catch a mewtwo on Pokemon platinum
you can't catch mewtwo he is too tough to catch but if you don't listen to me you are a NOOB
catch a murkrow make sure it stays at level 17 or 18 and only use the move astonish because none of mewtwo's moves will work on murkrow
1. Mewtwo, if you catch him in the Cerulean Cave, he will be at Level 70!!!