I have yet to try a Nuzlocke challenge. I don't know which version of the games to do it for. It sounds like fun (Also painful).
There is one pokemon that I do remember rather fondly, if only because of the strangeness that came with it. I was either playing Heart Gold or White 2 and one of the early pokemon I caught was a female Azurill that I named Hinata because her nature was timid. Hinata was a dear but -really- wasn't a good fighter, barely able to survive attacks from other pokemon and didn't really have the strength behind her blows to be a proper glass cannon so she was traded out for other pokemon often.
Then she evolved into a Marill... a male Marill. I didn't notice the difference at first and it was only when I was looking closing at Hintat's information for some reason (I was looking at the information for all my team at the time) that I was surprised to find that she was now a he (This is something that happens sometimes in games before Generation VI due to a gender coding error when Azurill evolves. There is a 1/3 chance that a female Azurill will evolve into a male Marill. Didn't know it at the time through).
Hinata's name remained Hinata because it was still early game and I didn't know where the name changer guy was (Honestly it also felt wrong to change Hinata's name at that point). Now, Hinata as a Marill was somewhat better fighter then back when he was a Azurill because he could take a hit or two, but still wasn't anything to write home about.
Then Hinata evolved into a Azumarill. Suddenly Hinata was the freaking party tank; Just about everything that wasn't lightning or coming from a pokemon that was several levels stronger then him just bounced off and did very little and Hinata finally had some bite behind his attacks to take full advantage of it.
And through it all, I viewed Hinata as this transgendered little pokemon that started off all shy and afraid... but with love and support grew into an absolutely powerhouse after being confident enough to be who he was, even if it wasn't as the gender he was born with. I was so proud of him...
In the end Hinata ended up going into the PC because I wanted to train other pokemon and get their pokedex information but he has always been my favorite pokemon ever.
I have one that I remember very well. It was my Venusaur from WAAAAAAAY back in Blue Version. Now, this was first time territory; I was like 6 or 7. And like many kids, I only ever used my Bulbasaur. Nobody else. The result was that, at the end of the game, I had a Lv 84 Venusaur... and my next highest was a Lv 44 Machoke I caught in Victory Road. So, I get to the Elite 4, start busting through. Do just fine, Venusaur can handle it, get through Lance and into the final battle with Blue.
Now, I'm still a little kid. A pretty smart kid, but I lack a lot of common sense and piecing things together. I knew what PP was; it was the cap on number of times you could use a given move. But I never ran out of PP between Pokemon Centers, so the idea that I would ever bottom out on it was inconceivable. Until it actually happened a third of the way into Blue's Team. I may have had Ethers and Elixers; I probably did, actually. But I didn't know what they did, so I didnt use them.
The result? Venusaur Struggled his way through Blue's remaining 4 Pokemon. One of which was his big, bad Charizard. All of them, with some help from healing items in between, but he did it. Didn't fall once. And it was glorious.
The other one was my brave little Zigzagoon in original Sapphire. I'm fighting Norman- aka Dad, the 5th Gym Leader. Again, I've mostly leveled the starter and not much else (wasn't until Diamond that I finally learned my lesson). Sceptile gets through the first Slaking and the Vigoroth, then gets taken out by the second, stronger Slaking. Who then proceeds to tear through the rest of my team until I'm just left with this one little Zigzagoon at level 4 that I had for dungeon escapes because I was unaware of the usefulness of Escape Ropes. I figure "What the hell, may as well try..."
Slaking took his turn off.
I used Dig.
Slaking swung- and missed.
Zigzagoon hit him.
Slaking took his turn off.
I used Dig.
Slaking swung and missed.
Zigzagoon hit him.
Slaking took his turn off.
I used Dig.And this repeated for GOD only knows how long, until finally this little Racoon That Could grinded down a giant mon over 10x his level and won me the badge. And he then shot straight to about Level 16 or so.