Who do you always use in Marvel versus Capcom 2?

I don't have a playstation 2 but I can play Marvel vs Capcom 2 through arcades present on big malls. I have noticed that most arcade players use Storm and Magneto. I do see other continue using Ryu and Wolverine as well as Magneto and Captain Commando. 
 
Here are the list of playable characters: 
  
  

Gambit,Spider-Man,Captain America,Megaman,Venom,Stryder, Juggernaut (as a helper) and sometimes,Jill

doesn't matter I ALWAYS WIN no one can beat me.

" doesn't matter I ALWAYS WIN no one can beat me. "

1. Jin,Venom and Ken 
2. Spiderman,anyone and Juggs
3. Ryu, Spiderman, Captain commando
4. Captain America, Venom, Spiderman
5. Megaman, Ironman, Sentinel
6. Storm, Magneto, Sentinel 

1. Wolverine(adamantium), Wolverine(bone), Juggernaut 
2. Cable, Iceman, Gambit 
3. Ken, Cable, Ironman 
4. Sabretooth, Cyclops, Megaman 
5. Captain American, Ken, Spiderman

Wolverine (adamantium), Ryu and Hayato 

GUys, haven't you also tried using characters that are kinda strange? 
 
I'm actually surprised that Marrow is included in the roster.

Megaman, B.B Hood, and Blackheart are my best team. I'm not very good.....

my team
Cable
Iron Man
Sentinel

Cyclops
Ryu
Doctor Doom
 
Not tactically sound or anything, but it's a pretty fun team :)

I also use Magneto, War Machine and Anakaris

Magneto, Cable, Psylocke.
 
and Iron Man, War Machine, Doctor Doom.

CABLE,STORM,PSYLOCKE OR I CAN CHANGE PSYLOCKE TO MAGNETO

Iron Man, Cable, Akuma. Their moves are basic and simple and I love their projectile supers. Massive damage.

Ryu, Wolverine, and Strider Hiryu.

It depends on who I am playing. But I usually use... 
 
1.Megaman,Jill,Tron Bonne 
2.Ryu,Ken,Charlie 
3.Wolverine,Spider-Man,Guile 
4.Dr.Doom,Rouge,Jin

I only use the top tiers because that's how I roll.

"I only use the top tiers because that's how I roll. "

Cap'n Comando  
Stryder Hiryu 
Jill Valentine 
Spider Man 
Dan Hibiki 
M.Bison

" Cable, Gambit, Sabretooth. "

Jill Valentine, B.B. Hood(That's right) and Cyclops.

Wolverine
Wolverine
Dr. Doom

Omega Red,Hayato,and Jin

Guile 
Charlie
Gambit

My constant favorite....
Magneto 
Black Heart
Thanos
 
my reserve fighters
Psylocke
Storm
Marrow

Cable 
Gambit 
Captain America 
 
Occasionally Megaman, Venom, and Iron Man, as substitutes

Venom
Morrigan
Jill Valentine
Sakura
Dan 
Psylocke
 
All kinds variations of those people

Storm,Iceman and Wolverine....

Here I found a full list of playable characters for MVC3
   
Marvel: Spider-Man, Hulk, Wolverine, Captain America, Iron Man, War Machine (alternate Iron Man outfit) Elektra, Thor, X-23, Magneto,  Shuma-Gorath, Emma Frost, Deadpool, Super Skrull, Taskmaster, Juggernaut, She-Hulk

Capcom: Ryu, Mike Haggar, Frank West, Chuck (alternate Frank West outfit), Spencer (Bionic Commando), Dante, Chris, Morrigan, Arthur, Amaterasu , Albert Wesker, Zero, Chun-li, Viewtiful Joe, Trish, Tron Bonne, Hsien-Ko, Akuma, Felicia, Bison, Roll, Volnutt