(Yay, my first blog post.)
Differences I could see between the character designs and my comments on them. You must know, though, that I'm bad at describing things.
Will finish up soon!
Their school uniforms overall don't count as differences.
Mato KuroiEditOVA: Smoother black hair, a somewhat bigger/more noticeable left twintail, and a patch of bandage on her right knee.
TV: Spikier blue hair, equal twintails, and a bandaid on her right thigh.
Some time before making this post, I didn't really see much of a difference in both her designs. Now, I do see some differences, which aren't very noticeable, but they're there. I think the reason why her TV hair's spikier is just to match with Black Rock Shooter. I'd say she's the least changed out of the three human characters.
Yomi TakanashiEditOVA: Wavy (or twisty?) dark green (somewhat brown) hair, no glasses
TV: Somewhat smoother and longer dark green (somewhat black) hair, glasses
One of two characters everyone complained about because their TV designs look so different from their OVA designs. But not counting the school uniform, I don't think she looks too different... Though, I do agree their personalities are different, but it didn't matter to me when I was watching the TV anime.
Yuu (Koutari)EditOVA: Short, choppy brown hair, no hairclip
TV: Short, combed-down brown hair, orange hairclip on her left side, could be somewhat taller (though still not as tall as Mato or Yomi)
No one's really said anything or much about Yuu's character designs... I guess most of her OVA design, like Mato, has been retained. Of course, TV Yuu isn't so Mato-obsessed and not willing to let her be friends with others compared to OVA Yuu. And, while school uniforms don't count as differences, both don't seem to roll up their skirts. And they're both pretty short, either way.
I'm not listing weapon differences... at least, not here.
Black★Rock ShooterEditOVA: Longer, smoother, black/dark blue twintails (right one reaching to her knees), zipper on a black/dark blue trenchcoat (upper half resembles a track jacket), with a single front zipper. Midriff scars, belt in a straight position, white boot soles, and straight boot flaps
TV: Shorter, spikier, dark blue twintails (right one reaching around her waist), belt clip on a dark blue trenchcoat (upper half less resembles a track jacket), with folded up sleeves, and zippers around the waist and back. No midriff scars, belt in a crooked position, black boot soles, and pushed-up boot flaps
The star of both animation projects has some noticeable differences between both projects. Though, some people don't see them, and just assume B★RS doesn't look any different (and don't buy the TV Animation figma). Personally, I like her TV design more over her OVA design... Wasn't too big on her midriff scars. Someone said that the reason why TV B★RS doesn't have scars was probably because of budget cuts. Even if they were joking, I think that's completely ridiculous.