First Level 100?

Nidoking, back in yellow I remember ditching Pikachu because I got annoyed at him following me. I might even have been 10 years old or so.

Edit: Wow, released in June 2000. So I was around 7 or 8. Little tryhard, I was, go me!

 

Walrein in Pokémon ruby. A friend changed it to me when it was a spheal, so I increase its level more than 60 time xD

 

If I remember correctly it was a Charizard, first starter ever. Quickly followed by everything else I had cause lolmissingno, those were the times after all.

 

I can't remember if it was my Scizor or Espeon that reached level 100 first. Nonetheless, both of them were really cool in the Pokémon Gold game. I thought Espeon was adorable and yet dependable, while Scizor just looked really awesome and was pretty strong. They pretty much destroyed the Elite Four with ease and I was able to beat a couple of my friends too.

Though, the one major loss was between my lvl 100 scizor and my sister's lvl 40 Ho-oh. XD Needless to say, I didn't know about the super crit, fire has against Scizor and her Ho-oh leveled him in one hit lol!

 

Nothing really reached level 100, I can't remember my fire red party... though I'm pretty sure it's close to the line of 9. Currently my party in black is in between 50 - 75. It's really hard to level up your party... requires a lot of time & effort.

 

I kind of hit a phase where I grew bored of Pokémon and didn't play it again, until Black/White came out. So, after I completed White, I grabbed the games I missed throughout the years...meaning I didn't have any level 100 Pokémon, until Pearl. My first 100 was a Luxray, named Tesla. I love him. After that, I kind of made it a goal to make all of my main team level 100...

 

Empoleon on Platinum. His stats suck as I didn't know about EVs and IVs back then. Now I have about 30 level 100s

 

Erm. Blastoise on Leafgreen. Tank he was.

 

Swampert in Ruby, though I ended up using Rare Candies from my friends Gameshark at around Lv 80
My first purely trained was my Soul Silver Umbreon

 

My first and only level 100 is my Meganium from Soulsilver, which I transferred to White. The next closest would be a level 82~5 in the same battling party.

 

hrrrmmm... Metagross on Sapphire i think, then Rayquaza.
On white, I trained my Emboar too lv 100
White 2 I traded my Zekrom from White and thrained that too... Then I was stupid and traded it for a Virizon '

 

Pikachu on Yellow version!

 

When I remember it right, my first Pokémon Level 100 was Umbreon, which I trade from Colosseum on my FireRed

 

I believe blastoise on my blue version was the first, followed closely by a flareon. I was so proud of that flareon, being able to kill my rival's venusaur with ember

 

Kyogre in my Pokémon sapphire! and haven't traded it to an other game, trading it to an other game takes away the magic!

 

Latias. Before I had my own game, I've always watched my brother play Ruby. He had a LV.100 Latios and he told me that Latias is weak and will never beat it. So, when I got my game and captured Latias, I trained it to LV.100 and challenged my bro's Latios to a battle. Latias killed it in a single Ice Beam

 

Swampert lvl 100 on Emerald Shortly after my blaziken got to 100

 

Swampert, I played Ruby the most by far

 

I honestly don't remember, but it was definitely one of my Pokémon from my old Blue version. (I started using that missing no. trick as early as I could right after I beat the E4, haha.)

I think the first level 100 that I got without a ton of rare candies was a Swampert in Sapphire.
I remember I beat the double battle reporter guys so many times in that game, they stopped rotating their locations... to this day, I'm still not sure if that was supposed to happen.
But it was an easy way to level that guy up to 100!

Edit: Also, the "why" was because I got to the point where I could just use surf to one shot their Pokémon and level up whichever ones I had in the party with Swampert.
It wasn't actually to level up Swampert, it was just a nice thing happening simultaneously.