Ino from GGX2 is kind of hard, but once you know her pattern she's pretty easy actually. You just can't rush in like you normally can, she's designed to counter that. She doesn't take hits very well I noticed.
Justice has just ...no. No pattern, no nothing. just lightning quick reflexes and execution on moves, no mercy, abuse of the instant kill, counters, super speed, did I say no sense of mercy? Justice was just chaos unleashed on you, (But once you got the hang of just how abusable Sol's dashing HS was, the rushing flaming kick he doesn't have anymore, nothing could withstand that.) still no match for Goenitz though...
I forgot about Ridley, he was actually pretty tough in Super. Very little pattern to follow, it mostly depended on your reflexes and how much you could last really.
Oh, lets not forget Nightmare in Devil may Cry, on Dante Must Die. Annoyance level like, infinity.