In the Original SMash brothers, my favourite to use was Link, Yoshi, & Ness.
In Melee, I would choose Mewtwo, Zelda & Young Link.
In Brawl, I picked Sonic, Toon Link & Zelda most often.
Toughest fight? None...well...maybe a few online...but fought anyone where there was that big of a difference in our skill levels so as to make the fight too difficult for me. Sometimes I just face 3 lvl 9's on my own...with them all being on one team.
I think Rob, Game & Watch, Olimar & Pichu are pointless characters.
My friend then you have not seen what they can do.....ive played against some people who are epic at them. Olimar is only okay, and Rob and pichu were useless.
Game & Watch is far from useless.
Im best at the speedy characters.
so
1. SSB pikachu and fox
SSBM fox MARTH zelda
SSBB Marth Zelda Meta knight toonlink, Squirtle, and maybe a few others.
2. Toughest match is the super hard infinite brawl(where you go against the wire frames), and playing with a specific friend(he is pretty good, actually plays in official tournaments, and he is like sasuke in part 1 vs naruto part one.....just a bit better than me, though i can hold my own with him. He is better at doing all sorts of tricks and combos, but i am better at timeing.
lv9 bots arent to bad though.(i play stock btw, not timelimit)
3
Least favorite characters are bowser, ganondorf, pichu, and snake(though there are some pretty op combos with him)(pichu is useless, and i dont like playing as slow heavy weights.)