I'm not sure if I ever responded to this topic, but here it is...
Christie: Nope, nope, HELL NO. Even with Helena(one my alt mains), I absolutely despise fighting Christie players because her strikes are almost the fastest in the game, her sidestep is godly and I think MR's is the only one that can compete with it as well. It doesn't help I still have nightmares of Christie since when it was DOA3 and 4 and I was still terrible, my brother LOVES Christie and always used her against me...still scarred.
Bayman/Leon: Again this is mainly fear talking as like with my issues with characters with charge attacks, my main issue is the fact that they both have plenty of charge moves which makes it a pain to try and counter them. Their damage from grabs is ridiculous as well if they chain all of them(due to the fact I suck and breaking combo grabs). Their AI usually end up with me dead due to endless counters.
Mila: *Sigh* Fighting that doesn't know what they are doing? Not so bad. Fighting a Mila that tries to grab? A Pain at times. A Mila that actually fights like a MMA boxer she is? NOOOO
Mila's pressure is freaking ridiculous and the ease of which she can stay on you is honestly unreal. A bad Mila is easy as pie, a Rushdown Mila will easily put me on edge, a Mila that can rushdown AND know when to grab...fuck.
ANY. VF. CHARACTER(Especially Sarah, but all 5 fit here)
Helena: Yep, one of my mains is on here. Pretty much as bad as Christie and that's all anyone needs to care about.
Alpha-152: obvious again.