What did you catch Mewtwo in?

[Earth Wolf-Howl]

The first Ultra Ball I tossed at... I think nearly half-health?

[Lucina Archaelis]

Ultraball... wasted so many just to catch it XD
It was the ideal ball at the time <.>

[Flamer]

Masterball. Was SRing for a shiny one so was hardly going to risk anything else

[Cutty]

I used masterball in my last games. But I restarted again and plan to use ultraball this time.

[Infernape4ever]

well i almost lost it against him buti caught bunch of pokemon and i used glooms sleep powder to make him fall fast a sleep(very low hp) and i used great ball 4 times and 5 time he cought

[DarthVader]

I generally use an Ultra ball.

[Gothic-Gothorita]

I caught Mewtwo in a Poke Ball for Starter Legendary means. I would've caught Mewtwo with the Master Ball considering how strong he is and how low his catch rate is, but I wanted to wait to catch my legendary beast with my Master Ball so it wouldn't keep running from me.

[Freeze*]

Surprisingly, with a poke ball. After 100 000 Ultra Balls that is

[PopPrincess_Lyra]

I think I caught it with Ultraball, first round in full HP, nya~I think I caught it with Ultraball, first round in full HP, nya~

[John Wallrein]

Ultra Ball. Got him down to minimal health, Paralyzed him and Ultra Ball spammed until BAM.

[Kutie Pie]

Probably a Master Ball. I don't have my LeafGreen copy on me right now, but I'm pretty sure that's what I did, unless I decided to be daring and used different PokéBalls.

[psychonerderer]

well, once in LG i caught him in pokeball. took awhile, but it worked. the on i have now is in a duskball.

[Shayminlover123]

A repeat ball. I didn't know what they did considering that FireRed was my 2nd Pokemon game.

[Chriiis]

Ultra ball. I remember only having around 10? That's where the save came in handy, haha.

[ShinyUmbreon189]

I once caught Mewtwo in blue when he was either asleep or paralyzed in Blue with a Pokeball. I went nuts cuz I was immature at the time lol. But usually I use Ultra Balls, I never use Master Balls on legendary's you can save in front of.

[Mitzi]

If I recall correctly, it was either my saved Master Ball or an Ultra Ball. I -- for the life of me -- could not catch such a Pokémon with a mere Pokéball, or even a Great Ball for that matter.

[Zoruagible]

I always use Ultra Balls because I need my Master Ball for the dog

[Porygonk]

I used timer balls, if you get the catch rate up to 4x after about twenty balls it works great, just the thing that sucks is that it has an attack that restores its hp

[Lareon]

I really don't know how. But i think i was really lucky. I've played leafgreen six times. The first time i reached cerulean cave, i didn't know that there was mewtwo. So i was unprepared. I just had 6 ultra balls and 2 great balls. I paralysed it and used false swipe until it was left with 1hp. Then i used all my ultra balls. And then a great ball. And i got him.

[MaliceForAlice]

I just throw my master ball at him. There's nothing else I can use it on that matters to me, and I'm just lazy.