All you need is M-E-G-A-N-E
I have gone through a whole region with one Pokemon and used HM slaves along the way and I quite commonly only use one Pokemon for the first 2 Gyms of a Pokemon game. Other than that I like to go through the Elite Four with at least four Pokemon in the party, so I do a lot of training just before I enter.
I solo'd Ruby with Blaziken. It was actually really easy. In the end he was so far above the opponent's in levels that type disadvantages basically didn't matter.
I used other mons for HMs, and I had to use an HM slave in the battle against Tate & Liza because it wouldn't let me challenge them with only one, but they were like level 5 so they basically just died straight away and left the battle to my Blaziken.
I never have solo'd. I tried to have my team's Pokemons' levels similar. Sometimes a leader Pokemon might get a few levels ahead but in battles I try to send out many Pokemon rather than relying just on one.
The entire region with one Pokemon for battles, but used other Pokemon for HM slaves.
I finished all the boss battles of Pokemon Red with a Rattata, Crystal with a Sentret and Emerald with a Zigzagoon. Red was a piece of cake, Crystal had a few annoying moments, but generally wasn't too bad, and as for Emerald... damn, I nearly went crazy, especially against Liza & Tate. At least I discovered Mud Sport has some use after all when I fought Wattson.
Who is this git?
Soloing the game is my default strategy for the in-game. I always use different Pokemon for HM's though.
To date, I have solo'd:
LeafGreen with Bulbasaur
LeafGreen with Venusaur
FireRed with Charizard
FireRed with Blastoise
HeartGold with Meganium
SoulSilver with Typhlosion
SoulSilver with Feraligatr
Sapphire with Sceptile
Emerald with Blaziken
Diamond with Torterra
Platinum with Torterra
Platinum with Empoleon
White with Serperior (it was NOT easy)
I solo the game so much, the strategy has become stale and I'm now working on playing through the games like I started: with a team of Pokemon.
SoulSilver FC: 1334-2716-6164
Platinum FC: 1591-7683-8872
I was able to solo a couple of the gyms in Black and White. For example I soloed Clay with Servine and Brycen with Scrafty, My Pokemon were leveled up as much as the Gym leader's Pokemon so it was easy.Thats the obly game Ice ever been able to solo gym leaders in. I also soloed Lance in Soul Silver with my Electivire which knows the 3 Elemental Punches and Brick Break.
I'm pretty sure I once solo'd Silver with Feraligatr. No idea why but I do remember restarting the game when it was Level 99.
I did use some other Pokemon for HM's though.
I've played multiple times in several games with just one Pokemon, often because I become too fed up building a new team every time. I mainly solo if I just want to complete the region really quickly, the games become ridiculously easy if solo'ing.
Theme set by Caprizant | Fan of Generation I.
Gold with Typhlosion
Gold with Furret
Gold with Onix (from Violet City)
Ruby with Blaziken
Ruby with Sceptile
Emerald with Swampert
I played Gold so much, I can draw the whole map right now. :P (and the same goes for Ruby, except the water routes xD).
Edit: Forgot to mention, I also used HM slaves, because of Surf, Fly and stuff.
I have never solo'd but I may try it, it looks fun.