Why did his name come up?

During the torch lighting ceremony on Har Harzl, the night of Yom Haatzmaut, perhaps you noticed the camera panning on the crowd rest momentarily on the above person.

I noticed and wondered who that is and why he is dressed like that as it is clearly not Rishon LeTzion Chief Rabbi Dovid Yosef (who, if I am not mistaken, bowed out of the ceremony due to illness) or his brother former Chief Rabbi Yitzchak Yosef or former Chief Rabbi Shlomo Amar. 

It seems many other people were wondering as well because throughout the day of Yom Haatzmaut this was one of the most discussed topics - who it was, why he dressed like that and more. Quite a stir was caused by his appearance.

So it turns out this is a fellow named Eyal Tziyunov who seems to be quite a character, claiming at times to be mashiach, dressing not infrequently like a Chief Rabbi, (I saw a cute line of someone, I think it was Yair Cherki) calling him the Rishon LeTziyunov), going up to Har Habayit dressed in this garb despite the Chief Rabbis all supporting the official Chief Rabbinate position of not going to Har Habayit.... is he a rabbi or not? I dont know, but sometimes I have seen him referred to as Rav Eyal Tziyunov and sometimes just as Eyal Tziyunov.

The interesting thing is there was both outrage and a supposed security incident with him at the ceremony dressed like this.

There were attempts to push the Rabbanut to file a complaint with the police and have him arrested. I am not quite sure for what. Is it illegal to wear the robes and hat? is Purim a legal exception or is it illegal then as well? Is the Sephardic Chief Rabbi (and former SCRs) the only person legally allowed to wear the outfit? As far as I know he has never claimed to be the Chief Rabbi and in interviews over the past day or so he has explicitly denied any claims that he is claiming to be so.

People also complained a security failure because he was able to get into the event and be in the crowd in proximity of the Prime Minister. I am not sure why that was an issue. I assume security checked him and did not find him to be carrying a gun or any other weapon. He never attacked anyone. I am nto quite sure what the failure is. Maybe people are assuming he was not checked because security might have thought he was the Chief Rabbi? I would assume a badge or some identification has to be shown to get through security, and I would like to believe security at these events is already familiar with the Chief Rabbis and cannot be so easily fooled (though you never know). Also the design on his robe and the quality of the garments is not the same as that of the garments used by the Chief Rabbi and are easily distinguished.

I hope this guy gets the help he needs if he is more than just eccentric, but let's not turn everything into a crisis and an insult.