As much as I'd like to revoke the current approval it probably won't stand. Now, we've noticed (this review has been done as a group with fellow staff members so it's a general consensus) you've had two characters before and have been on the site for quite some time already. Usually we expect improvement for both the writer's sakes and the readers but there are some points in the profile that we've taken concern with.
First of all
That image is way too damned big. Now I know we're not all computer geniuses but a simple google search won't harm anyone, but we've taken the liberty of offering you a properly sized image, courtesy of DrGustave. As well as a somewhat improved symbol, in our opinion.
http://i.imgur.com/1eWZdSJ.jpg and
http://i.imgur.com/0Rhk0uD.pngWe won't always be doing this kind of stuff for you and usually we'd ask to remove it, or most people ignore it. So next time, please do better.
Faunus type. Bear.
No features whatsoever nor is it mentioned anywhere else on the profile. I'm not sure what you're trying to do here but faunus' usually aren't a faunus by name. They have features, usually one but we allow two or more given some circumstances. Appearance doesn't show any sort of faunus feature and that badly represented face claim doesn't help either.
Regarding appearance, All black clothes. As an older member we expect people to not be so lazy as to just use the classic 'hoody, tshirt, pants" combo. Now, if you think this is really what you want go ahead but I won't say it's good. He hates the uniform for some odd reason, which is never explained, and his hair and skin is white. White? his face claim shows a black haired, blue eyed, boy. I won't be editing anything but if you can please try and change the face claim to match. Like color the hair at least. I could google black haired black hoody anime boy and hundreds of similar images would pop up, it probably won't be hard to do, just saying.
He's also around 5'7 and weighs "at least"(?) 115 lbs. That's pretty underweight for a male of his age and don't justify little girl with giant scythe just cuz it's rwby. Using that logic it'll mean that bigger characters would grow in strength as well and it won't really be an advantage, more on that in history. He's scrawny, actually probably more on the gaunt side, and wants to fight. He needs to build up some muscle by at least another 15 lbs or 30 even.
History
Ezrin was always supposed to be a ninja
Red flag right there. The problem with this is, well, we don't know if ninjas are or were even a thing in remnant. Sure it's possible but within the whole history the only thing ninja like mentioned is somewhat spying and assassinations. Historically Ninjas, or shinobi no mono were not ONLY assassins. If I were to give them a counterpart it would be that of a government secret agent of sorts. Undercover work as a spy, maybe forgery, MAYBE assassination, heck their were even samurai who were ninja, so generic fanatsy ninja is really not something you should be looking up to. Now, the main reason I'm not leaning towards this whole ninja thing is the fact that the only ninja thing in the whole profile is...nothing really. Assassination and tracking isn't a purely ninja thing to do and also you have plenty of counteracting clauses.
Ezrin had a father who always got what he wanted due to his ability to complete favors flawlessly, whether it be tracking quests, or assassination attempts.
How do you do something flawlessly and only get an assassination 'attempt'? Semantics, i know but i'd prefer you not go for the 'flawless parent figure' only for him to be offed by a mysterious attacker who we never hear from again.
Now, since the history is basically a copy paste of your former histories with some added fluff, I'll address a more prominent problem. Reading back on a few of your older profiles you seem to have gone with the formula:
Edgey kid. Edgey problem. Dead Parents. Mysterious Mentor. Beacon.
Now, see here we can keep the history as is, with no further mention of ninja stuff in further...
But that this is your third character and we want something higher quality from the writing. The history presented, whether intentional or not, is very cliche and edgy. Not just the image of an anti social kid. After reading the past two character's histories, they all seem to have a very cut and paste format of losing the parents, or being taken away, and then a mysterious benefactor taking them in and training them in secret arts for 4 or so years. We aren't trying to be harsh, we're simply trying to point out the problems in the writing so you can grow as an author and creator.
If he has a good reason, sure
But the current reason is nothing.
Regarding the bullying aspect now. You state he was bullied before and during one well regulated battle, with rules, and a referee, he managed to beat one bully within half a minute by activating his semblance and pinning him down. With the current weapon being...a katana(seriously?) and the fact that he's scrawny little kid, I'd highly attribute this to the bully being an idiot rather than Ezrin being a badass. You see, he's light as a feather and has no wrestling experience, that makes pinning a probably heavier, just as well trained SIGNAL student highly unlikely. Half a minute isn't even that impressive since spars usually won't go beyond a certain extent because these are students and we don't want them missing classes because they got the shit kicked out of them.
Now. Let's assume he did win with pure skill alone (or idiot bully is an idiot), the other bullies wouldn't say 'oh, this guy is a badass. let's leave him alone." No, more often than not they'd want retribution for their humiliated comrade and pay him back tenfold. I doubt mr ninja child can handle even two signal trained enemies and don't see he can because he seems to be more of an ambush fighter( with a katana?) than a professionally upfront fighter like Pyrrah, which we'll never allow. Pyrrah was the obligatory super kid and paid the price, that was the show and we won't be allowing super good fighters who can take on whole teams by themselves.
Now, to address this problem I can suggest one of two things. One, the bullies weren't really that good at all, with barely passing combat grades and were complete idiots and cowards who got in because they were barely acceptable, which explains why they left him alone. Or two, the more dramatic and probably character development reason being that he got left alone for a while but the bullying got worse and his ninja tactics didn't save him this time.
Personality is as expected of the generic edgey type. Come on, you can do better than that. If you look for the myriad of other edgey characters around they'd have near copy pasted personalities. Wants to be alone, doesn't trust people, then suddenly a complete 180 for some odd reason just so they can fit into normal threads. Don't be lazy, actually think about this section because making stuff up on the fly during threads equates to you doing the same thing for each and every single one of your future characters as well. Also, it's not interesting or original to say the least. Half of his personality section is just likes and dislikes, it would be better if you fleshed out his personality more. How does he feel about bullying? About school? About the dog eat dog world that wants to rip the guts out of anyone willing to venture outside the walls? THINK, then write. Or read up on more stuff and don't just use generic boring anime cliches as a sole basis. Themes work out, allusions, he's a friggin ninja child! Maybe he lies, maybe he cheats, maybe hes an observant character, maybe he intentionally avoids social contact out of paranoia! This is one of the most important sections because it's what determines how you actually USE your character rather than making up posts on the fly for the heck of it.
Semblance.
How does his invisibility work? Reflection? Refraction? Because mere light manipulation won't make him nigh invisible. What happens when he attacks? Does the invisibility dispel? Would he possibly be able to do smoke and mirrors tricks in the future? Effective area if he can? Expand.
Combat Behaviour
Now, this is where it contradicts with that piece of info you gave during history that made all the big bad bullies fear him.
In combat he is rather weak, as he would rather make peace with others. but when the ability to fight is all he has, then he can be pretty ruthless, as he can chain combos successively.
Neither of those really justify what happened because all you said he did was pin down the enemey. Also, it's contradicting. Either he's weak in combat or he's not. Pick one. Or give a proper situational approach rather than he's bad but then he's good, it doesn't make sense.
It appears he's an ambush fighter so it's more likely he's on the weaker side on one on one combat. Don't just add 'he can be pretty ruthless' just as an excuse to go berserk like a hundred other oc's out there.
When it comes to the "true" battle, the ones he can't escape, he fights with his stronger attacks first, to try and get rid of the problem first. He has some hand to hand training, but isn't very well at using it. He stumbles a lot, and tries too hard to predict movement, especially since he isn't really strong physically.
Again, contradicting. He can pretty much go all out then suddenly he stumbles and...thinks too much?? That won't really happen in combat because he's pretty much gonna be relying on instinct and not his brain too much. If he did he'd stick to the ambush tactics. Give him a damned smoke bomb, isn't this a ninja?
Weapon.
Katana.
That's it..?No further description? No history? Oh, because I missed this earlier let me cover it.
HE MADE IT WHEN HE WAS 6 YEARS OLD?

At that age most kids are still eating glue and throwing rocks at trees and playing with sticks. Change it. Making a forged weapon that lasted till Beacon when he was six is dumb. Bump it up to his actual academy stuff because that's where they're taught to make it and all that jazz.
GLORIOUS NIPPON STEEL FOLDED 1000000000000000000000 TIMES!