Just pulled my fifth black Mohawk Storm from a standard pack (Heroic packs are strictly Hawkeye only these days…)
She is now a fairly farcical 0-0-5. She sits alongside my Loki (0-3) and Falcon (0-0-3) in being amusingly unbalanced
My little Cap was 1-1-4 for an absolute age before I got any more yellow and red covers.
What are/were your most unbalanced characters?
I’ve got LDaken at 2/5/1 and Black Panther at 5/4/1. That’s kinda depressing, considering that his truly great power scales by covers, and I only have one. 
Like you I keep getting Mohawk black covers - recall mine is 1/1/5 or 1/2/5. Everyone else is pretty balanced (despite avoiding playing for her covers in PvP, from tokens I have a nicely balanced 2/2/2 She-Hulk). Since maxing Hood yellow I could have made another 5/0/1 Hood though from sold covers and I have chucked a ton of Psylocke blues
MBW - I and most of my alliance have been keeping one at 5 blue, 0 purple for team-up handouts.
4/1/0 C.Magneto. I’ve been playing for close to a year and I only have 5 covers, which I’ve got from events. I only have ever opened 1 from a token. Contrast this to the literal dozens of Punisher and Hulk covers I’ve opened.
Invisible woman, 4 yellows nothing else. Much invisible wow.
My 1/0/0 Fury
I’ve got a 5/5/1 Magneto with that 1 in Blue
Lazy Thor with 2 Red, 2 Green and 0 Yellow
I would kill for some yellow Lazy Thor - I’ve been beached on x/1/x for months now.
My least covered 3* is deadpool with 3,1,2.
4* would be fury 0,0,1
I have had C Mags at 2/0/2 for about 100+ days now. I can’t draw his token to save my life..
I saw someone with a 0/1/5 X-Force. I felt so bad for them.
My 5/5/2 OBW. I have so been waiting for those black covers. I have had 4 purple OBW covers drop in the last week. I should’ve left her at 3/5/2 because she is a lot slower that she should be now.
5/1/2 Deadpool. But since one purple cover is enough to Whale once per 8 days or so, I’m not complaining.
Same boat here I have my BP at 5/4/1. Feels like it will be forever before he will be playable 
Mags at 4/0/0 or Punisher at 5/1/1. I could list Daken at 1/5/2, but very happy about the 5
I had Hulk at 5/0/1 for quite some time (now 5/1/4 I believe) and I’ve sold maybe five green covers.
Other than that, my 1/5/2 Spidey could use some love
Until he came up in the current PvP season I had a 4/0/0 Hulk. Now he’s 4/0/2, which is at least something.
Also, my 4/0/3 Hood has the highest ratio of covers to usefulness in my roster.
IW 5/2/1
I’ve sold at least 8 IW 
covers.
I have a 5/x/2 Human Torch. I’d like just ONE black cover so that he could, you know, be useful with black matches. Alas.