The official monotype challenge!

Erm...what?
This is probably the first question that came to mind when you clicked this thread. So, I'll explain about the Monotype Challenge. If you're a member of any other Pokémon forums, it wouldn't surprise me if you've either participated in or noticed one of these threads. Normally, people put them out for separate generations, but this thread will manage all generations for the challenge. Monotype literally means onetype, which should explain it enough. But for you slow people, I'll be kind:

The Monotype Challenge is a challenge which can be played out on any official Pokémon game - Red, Blue, Yellow, Gold, Silver, Crystal, Ruby, Sapphire, Emerald, LeafGreen, FireRed, Diamond, Pearl, Platinum, HeartGold, SoulSilver - in which you play through the game normally, but with a twist. When you sign up for this challenge, you must state two things: what game you are playing it on, and what type you are going to use. The type you selected is the only type you can get throughout your playthrough, but any dual-type Pokémon sharing the type and HM Slaves are allowed.

Rules
1. Hacking or using glitches in your game is not allowed.
2. Legendaries are allowed to be used, but are frowned upon - it really takes away the 'challenge' if you use legendary Pokémon.
3. Each region demands a different finishing clause, listed later.
4. If you take upon the challenge, you must regularly make updates on your progress, including your current team, their levels, held items, movesets and any other information you feel necessary to add.
5. You are allowed to quit the challenge at any time, but if you don't feel you can pull through, don't try.
6. Commenting on other's challenges is allowed, but please refrain from having conversations in this thread.

Finishing Clauses
Generation I - R/B/Y/LG/FR - Defeat the Elite Four and the Champion, then successfully capture Mewtwo.
Generation II - G/S/C/HG/SS - Defeat the Elite Four of the Johto League. For an additional challenge, defeat the Kanto League Elite Four as well.
Generation III - R/S - Defeat the Elite Four.
Generation III - E - Defeat Steven for the final time in Meteor Falls.
Generation IV - D/P/Pt - Defeat the Elite Four.
Generetion V - B/W - Defeat the Elite Four. For an additional challenge, defeat Alder and Cynthia.

Accepted Types
To make it fair, you must be able to obtain a member of your type before the third Gym. Any events that happen in the third Gym town that you can obtain a Pokémon of your type are allowed to be caught there, but anything past this Gym is not allowed (no, you can't just skip the third gym or go to any routes that you have to pass through the third gym town to get to.). If I have missed any type, then feel free to let me know and I shall update.

Kanto
Fire
Water
Grass
Normal
Psychic
Poison
Flying
Fighting
Rock
Ground
Bug

Johto
Fire
Water
Grass
Normal
Flying
Bug
Rock
Ground

Hoenn
Fire
Water
Grass
Normal
Flying
Bug
Fighting
Steel
Psychic

Sinnoh
Fire
Water
Grass
Normal
Flying
Ghost
Bug
Dark
Rock
Ground
Poison

So, good luck!
If you wish to take the challenge, post here saying so. I wish you all good luck on your single-typed adventures!