3rd Gen Whom did you used Master on?

I just dupe my Master Balls in Emerald so I don't have to worry about running out.

In FR/LG I always save the Master Ball for Mewtwo, it suits it so well.

Trainer_Altair Me too ! I sometime use it on Molters but Mostly save it for Mewtwo !

I used my Master Ball on Mewtwo... And I sincerely regretted it after I saw Suicune running around. ;_; I used to have that deluxe Pokemon handbook, you know the one, with the green cover and Pikachu and Mew on the front? I had that book, and as a kid, I didn't actually realize that the handbook was actually for R/B/Y and not FR/LG. The book said that the only way to catch Mewtwo was with a Master Ball, so I did what it said... I really wish I hadn't, because I never did get Suicune in the end.

I used my Master Ball for Raikou. I honestly try not to use Master Balls on non roaming legendaries because a good supply of Ultra Balls and a bit of luck will usually do the trick. Took about 20+ Ultra Balls before I got Mewtwo, but it was worth it. Entei, Raikou or Suicune are nearly impossible or are painfully tedious to get, and they took forever to appear. When they finally did, out came the Master Ball.

On my most recent playthrough i used it on moltres. I had no money to buy pokeballs because i used it all on stuff for the e4. What can i say, i was desperate.

I pretty much always save up the Master Ball for Mewtwo, since most other Pokemon usually aren't too hard to catch. If one, usually one of the birds, is causing me problems though, I may end up using it on that one. I've used it on Zapdos on several occasions, so yeahh :p One of my friends also used it on a Fearow once, in my game mind you, because someone had told him that it was the legendary Grass bird hnggg.

Anyways, my latest one would probably have to be Mewtwo. There's not a whole lot of legendaries to go around, and considering I never encountered the legendary beasts a single time in my game, they're kinda out of the question. And yeah, Mewtwo is definitely the hardest one to catch by regular means :p

I kinda save it for Mewtwo.
I used ultraballs on the trio birds though.

Well it wasn't really patience with me . heh* , I have a knack for catching a pokemon with a pokeball that best matches the colors of it.. for example Mewtwo is purple, so i'll use Master ball. Zapdos yellow and black, perfect for Ultra ball... Groudon took forever since I used Cherish ball...don't get me started with Latias -_-

Mewtwo is the most powerful Pokemon in the Kanto games so of course I used the Master Ball on him. I caught the legendary birds with Ultra Balls.

I used it on Mewtwo cause the masterball is also purple :D

i think i gave it to my charizard for safe keeping. i generally save master balls for roamers like latios but i didnt really need it in firered

I used mine on Suicune in FireRed it was worth it to save that Master Ball.

Used on mewtwo but traded it to a friend for his lvl 100 Charizard stupid kid days ahha