3rd Gen What Pokemon did you use the Master Ball on?

Haha why not catch it with Wobuffet again? I used mean look and managed to catch him on my Sapphire run :)

The first time I played Sapphire, I used it on Kyogre, the next restarts, I learned better to use it on Latios/Latias.

First time through, I didn't get the masterball (oops) and I thought Groudon was supposed to be like a boss battle so I killed him. (Yeah, Ruby was my first pokemon game.) Next time I used it on Groudon. It's always on groudon, then I piss myself in anger trying to catch Rayquaza with an ultra ball.

Well I don't remember how much, but I caught all of them with Ultra Balls except Rayquaza and Latios.

Rayquaza ~ Pokeball (Only 1, found out it works a lot better when Rayquaza is flying xD)
Latios ~ Master Ball

It was either Pelipper or Kyogre, I don't really remember what I used it on.

I accidentally skiped past the masterball party. note these are estimates i dont know exactly how many i used.
kyroge timer ball (34)
regice timer ball (37)
regirock timer ball (26)
registeel timer ball (89) i tried a couple times at him. Funny story when i first got emerald i found the regi's caves and the the that opens there caves an knew they were in the games but being a little kid i didn't use the internet but i recently picked up my sapphire again and got the regis all in one night. Got no sleep that night.

I ended up using my master ball on a latias. However, after I accidentally deleted that file (don't ask) I ended up using superskarmory's guide on youtube the second time. He ended up catching it in a regular pokeball, so I went "Pffff, I can do that!", so after 2 hrs of sleep powder I finally caught it. Then I showed my brother and he ended up catching it in a premier ball the next day. From that day forward, I catch all legendary pokemon in heal balls, because I can.

Rayquaza - 26 Ultra Balls and 1 Pokeball
Latios - Master Ball
Mew - 5 Ultra Balls
Deoxys - 60 Ultra Balls

I used my Matser Ball on... Groudon. Yes, Groudon.

I made some notoriously newbie mistakes that my friends laughed at me for in that game. Looking back, I don't laugh. I just get embarrassed. ^////^a

Ruby, I used it on the mandatory Groudon they threw at you.

I imagine people playing Sapphire usually bust it out on Kyogre since it cleans the rest of the game easily, but maybe they get away with Net Balls?

In my first run I used it on Kyogre in Sapphire. But I smartened up later, haha.

The first few times I played through my Ruby, it was always on Groudon, and being young isn't really any excuse for me, since I usually did know it was best to save it for other ones (well, usually I just wanted to save it for Rayquaza, whereas saving it for Latios would've been a much better idea lol), and in the last playthrough I'd forgotten where it was even located due to it being so many years since I'd played it, and since I was in such a rush to get through the Magma hideout, I missed it, and didn't even get it that time. Ended up catching all the legendaries I was going for in regualr Pokeballs anyway lol

On my first playthrough of Ruby, I used it on Groudon. I felt like an idiot after I found out how hard it was to catch the other legendaries.

I definitely remember obtaining a Kyogre when playing through Sapphire. Presumably, me being a lazy 13-year-old, I wouldn't have wanted to deal with a big epic battle to get the super-cool-awesome Water legendary so... Master Ball it is.

Always the big legendaries. Groudon, Kyogre, and Rayquaza. Didn't feel like going through the whole process of trying to save it, so yeah.

I couldn't exactly find Lati@s, so yeahh...I used it on Regiice my first time through.

All the others I can't remember, but it took an insane amount of Ultra Balls.

I used mine on Kyogre. I used an Ultra Ball on Rayquaza. My friend found a shiny tentecruel Lv. 38 and wasted it on that.

Emerald:

Groudon: 23 Time Balls and 14 Ultra Balls
Kyogre: 76 Dive Balls. He just did not want to be captured.
Rayquaza: 20 Ultra Balls.

Latios: Master Ball.
Latias: Never managed to get it. :/

Regice: 39 Ultra Balls
Regirock: 27 Ultra Balls
Registeel: 64 Ultra Balls and 5 Time Balls. Took me a lot longer than I thought.

In Ruby, it was Groudon. Sapphire, it was Latias, and in Emerald it was Rayquaza.