Hi guys I started a new game in leafgreen and ended up with this:

Charizard Lvl 50
Hardy nature
Aerial Ace
Blast Burn
Flamethrower
Sunny Day

Victreebel Lvl 50
Quiet Nature
Giga Drain
Sleep powder
Slude Bomb
Razor Leaf

Nidoking Lvl 50
Bashful Nature
Earthquake
Ice beam
Brick Break
Megahorn

Raichu Lvl 50
Timid nature(you cant imagine the trouble i had in searching for him in Viridian Forest)
Thunderbolt
Thunder Wave
Double Team
Attract

Starmie Lvl 50
Modest Nature
Surf
Ice beam
Confuse Ray
Psychic

How do you like my team?

Low leveled. Yes it is, these days all have Lv 100.

Now for different Pokémon:
Charizard : GIve it a fighting type move or else it will be pawned by Rock.
Victreebell: Allright
Nidoking: Good.
Raichu : And what do you plan to do against Rock/Ground? Give it Iron tail.
Starmie: Give it a recovery move and it will be perfect.

All in all : 6/10.

It's pretty good but as Prongs said it should be higher. But it depends on where you are though. Weaknesses should be covered more.

Thanks guys for the suggestions. I'll work on them for sure.

Raichu doesn't seem very good
I mean only one attack!
First thing Attract is not very useful for same gender
Second thing Thunder Wave..... Thunderbolt can do that too with attack!
Third thing Double Team... I wud prefer Swift here
You can also have a thunder in case u face a tough pokemon!

My FR team:

Charizard (lvl 93) flamethrower, heat wave, wing attack, dragon rage
Pidgot (lvl 50 training) wing attack, fly, gust, quick attack
Raichu (lvl 65 training) thundershock, thunderbolt, slam, thunder
Dragonite (lvl 100 trained legitimate) Slam, Hyper beam, Wing attack, Outrage
Mewtwo (lvl 70 just started training) original move-set
Suicune (lvl 50 just caught by accident) original move-set.

Rate it.

Heh! U obsessed with wing attacks? =P
Anyway as much as I remember original moveset of Suicine had Bubblebeam, Rainy Day, Aurora Beam (Got a bad memory =P )
I wud suggest replacing Rainy Day with Dive......No super reason but it is kind of a defensive move too in case u expect next attack to be a hyper beam or likes....
And having a fighting type move in ur team won't harm as there are some Dark Types in l33t 4

lol
This was my team in FR almost 8-9 months ago, when I didnt know anything about sinnoh and had a lil knowledge about pokemon.
So, excuse me..

lol never look at my team then =P (It's pointless for me to have a high level team as I have access to only the in-game events as I lack a console)
contrary to Max's opinion, Raichu's quite nice, with Partract-evasion (substitute is cool too) . But it's a him, not much good for attraction..
Victreebel's cool, though two grass attacks seem redundant ( pure giga draining with other types thrown in is good, or sunny-beams, though you probably used up your TM on Charizard)
Blast burn is really pointless. Sunny Day+Flamethrower+STAB=380 damage in three turns
On the other Hand, Sunny Day+ Blast Burn+STAB=300 damage in three turns, also suffers from lower PP and accuracy.Get Brick break instead.
Though Nidoking is good, It Really isn't good at using a special attack like Ice beam, for a type advantage against flying, try Rock slide
I wouldn't want a recovery move on Starmie, He should be left to Special sweep, With STABby Surf and Psychic, also a good Ice beam against the E4 dragons. If you really want to stall your opponent, Confuse Ray is good enough, coupled with Leftovers. (assuming you're battling in-game)

Hmmm... I assume your sixth pokemon is an HM slave? You could have a good flyer instead (assuming you don't want Ubers) like Aerodactyl/Fearow .. though Flying can be done by chari too

You have to keep all HMs with your team because they can be use full anytime. Use one more pokemon like pegiot/moltress/articuno/zapdos. They are very helpful as they are flying type pokemons. Its your wish now. It a moderate team.

U can keep Hm slaves if he dus want it.. Hm moves suck xcept for Surf!

HMs are very important for a trainer, because there are so many events which even do not allow us to go back. I fire red after beating elite four it is nessasary, HMs are not required to beat elite four. Now your wish.
In FR I usually keep
Raichu Lv.70
Charizard Lv.70
Vaporeon Lv.70
Pidgeot Lv.70
Vileplume Lv70
Ninetales Lv.70

See the image below:

AHAA!! Rare Candy Cheater!!

You are right but a little. I raised them till Lv.50 and used RareCandy.

Not true!!! Coz wen Charizard actually evolves from Charmeleon.... Its HP will be around 150...!! And in 34 { Lv 70 - Lv 36 = 34 Lvls } Levels only 60 Hp?? Too BAd to be true!!