LeafGreen Solo: (INDEFINITE HIATUS)
Thorn the Bulbasaur
Lockdown, the key in any solo run is to keep things fresh.
As such, take a Bulbasaur and name him Thorn.
This Bulbasaur has decided that your run will be full of twists and turns, so it makes a decision to constantly mix things up.
From level 10 onward...
1) If it has an odd number of health remaining, it can only use STAB moves.
2) If it has an even number of health remaining, it cannot use direct STAB attacks.
3) If it is in Overgrow range, ignore restrictions 1 and 2 and use only Grass-type direct attacks.
If you have an even number of gym badges, no potions or other HP-restoring items can be used.
If you have an odd number of gym badges, no status-healing or stat-boosting items can be used.
Finally, each time you battle your rival, whether or not Thorn can hold an item is flipped on or off. (You decide how the item restriction starts, but it flips every time. Think ahead!)
Beaten Brock, Vine whip's 10 PP is really annoying, though, as well as opposing 'mons that can only deal an even number of damage.
Cleaned up the S.S. Anne, Razor Leaf is amazing compared to Vine Whip. One white-out so far, against a Bug Catcher who para-fusioned me to death with a Butterfree.