Free Step Dodge

Ryu Hayabusa/Leon/Tengu
Lizard Man/Cassandra/Taki
Scorpion/Nightwolf/Rain

My absolute favorite fighting game character is probably yoshimitsu from the tekken series. I play too many other chars to list though.

Momiji/Helena
Noel Vermillion/Litchu
Taki
Juri/ibuki/Akuma
LiLi/Slim Bob/Alisa
Sub Zero
Yukino from Persona 4

Ayane, Bayman, Lisa, Taokaka. ^^'

Mortal Kombat: Scorpion/Liu Kang/ Kabal
Street Fighter: Akuma/Juri/Cammy
Dead or Alive: Jann Lee/Kasumi/Mila
Tekken: Lili/Asuka/Marshall Law
Soul Calibur: Pyrrha/Tira/Kilik
Blazblue: Noel Vermillion/Litchi
Guilty Gear: Dizzy/Baiken

DOA: Ein
Tekken: Jin/Jun/Law/Hwoarang
Soul Calibur: Yunsung/Hwang/Z.W.E.I
Mortal Kombat: Kenshi, Ermac
Guilty Gear: None (Maybe Sol)
BlazBlue: Hakumen
Street Fighter: Ken, Yang, Cody
Persona 4 Arena: Yu, Yosuke
UMVC3: Zero/Vergil/Dante

Oh and:

KOF: Kensou, Shingo, Kyo, K'

I decided re-do my list, left out a few things.
Street Fighter: Evil Ryu/Ken
Tekken: Jin
DOA: Mila/Kasumi/Jann Lee
Persona 4 Arena: Yosuke
BlazBlue: Terumi/Hazama
Mortal Kombat: Sub-Zero/Liu Kang
UMvC3: Deadpool/Ryu/Hawkeye
KOF: Mai/K'/Iori
Skullgirls: Parasoul/Squiggly

Forgot Darkstalkers but only like Morrigan.

And JTB we have same favorite DoA chatacters lol.

Apparently so lol. I must ask, if Kasumi is one of your favorites why don't you use her?

There's more but in general these are the ones I use.

DOA: Helena/Sarah + 9 other subs
Tekken: Anna/Lili/Miguel/Violet
King of Fighters: Mature/King/Shingo
Soul Calibur: Amy (SCIV)/Viola (SCV)
Street Fighter: Rose/Cody
SFxT: Poison/Nina
Guilty Gear: I-No/Millia/Anji
Blazblue: Bang (Only played Calamity Trigger)
Mortal Kombat: Sindel

DOA5U: Alpha-152/Phase-4
SCV: Elysium
BBCS:EX: Lambda/V-13
P4: Shadow Labris
UMvC: Morrigan/Dark Pheonix
TT2 (When I play it): Unknown

Good question. Actually when I first started playing DoA5U she was my primary main, but was unable to use her effectively as I hoped. She is my favorite DoA female character. Just when using her I have a bit trouble on what to do with her, but im back again using her so now im spending time using her.

Honestly Im not going to really be using anyone else in DoA5U except for Jann Lee and Kasumi with a bit of Mila on the side lol.

@Gurimmjaw Well if you ever need help you can ask me. I'm like the resident Kasumi player here, I'm #1 on PSN with her, I'm godlike(No, no, not really all those things are lies, but I know enough to help).