Everyone here keeps posting their least favorite designs and never their favorites to display the contrast in their tastes.
Stand back, niggas.
Spoiler: Top 3 favorites (click to see content)
Tessa (Red Earth)
Her appearance is plain, humble, to the point. Her character is that of a researcher that studies the science of magic. She looks the part, plays it too, and her voice is silly amazing; her CV got it down pat to the point where even in Pocket Fighter, she tried to sound silly and it didn't work. You could tell she was unique enough in her apparent plainness to retain an identity and she has only had very few appearances to pull off what someone like Ryu could.
Shion (KOF)
Best girl of KOF. The setting for the boss fight and the fact that you had to fight him alone in rigged ruins so he could stand a chance against a team of three (even though he lost, mind you!) displays a human, fair side to the character, his different stances help him be both recognizable and flexible in his fighting abilities, plus he got dem hips. 10/10 would marry
Feng (Skullgirls) ;___;
Zappa (Guilty Gear)
The first thing you notice about the guy is his tacky shirt and baggy tourist pants. And that headband. At first, one could possibly dismiss him as a waste of imagination, yet then the ghosts kick in. He suddenly looks ridiculous and creepy, sounds insane, and plays like Regan from Exorcist. Shit, he pukes FROM HIS BACK. His main fighting mechanics are based on summoning occult mythos in the form of ghosts, and the one ghost that haunts him is not only a big reference to Japanese horror movie culture (Sadako from Ringu, her name doesn't even try to hide it), it's the spirit of someone who loves him that may or may not have been the love interest of a time traveler. (It is heavily implied S-ko is Megumi, Axl's love interest from an alternate timeline that he still remembers, and his memory of her would be what's been plaguing Zappa in the first place.)
FUKKEN DEEP.
Spoiler: Top 3 least favorites (click to see content)
Gado The Lion (Bloody Roar)
Initially, Gado has displayed himself as a big bad that was actually full neutral and was shown to be a concerned adoptive parent bent on taking down Tylon, the biochemical manipulation company that managed to turn a select few individuals into zoanthropes; people who can morph into anthropomorphic beasts to help Tylon gain more control of the world. Now, I used to like this character a lot until Bloody Roar 3 and Primal Fury where his main motives are "I am a slave to my condition" and "Jenny is a cock-juggling thundercunt" and his whole parent shtick is thrown aside as a mere mention even though Shina/Marvel, his adoptive daughter, is still up to her rebellious antics. He only takes notice of that in the events of the fourth game which, quite frankly, sucked. The huge spike in personality and back again was entirely unnecessary and a generally big point for me where I just said "FUCK IT."
Litchi (BlazBlue)
I just dislike the fact that she is a gigantic retard.
Amy (Soul Calibur)
SHE DOESN'T UNDERSTAND. Joking aside, she kinda' ruined Raphael for me as she was there out of nowhere. In SC3 she was shown as an extra in every sense of the word: she was literally only included as foreshadowing for an extra addition to the arcade version. Then all of a sudden her role in SCIV is important as the light of (whatever's left of) Raphael's life that turns him into a complete and utter fool while Amy herself remains forever stoic and soulless, which is ironic because Raphael's the one who shouldn't have a soul yet is still filled with blind passion. This certainly makes her character evolve, but only as a catalyst and nothing else. She is there for absolutely no reason.