Hm.... If you mean the current Shippuden, well, let's just say he (with Naruto, Sasuke, and a few Akatsuki), are in a totally new league now. Yes, that means he can kill Rock Lee in less than a second. Answer: Yes, he is tough.
Because he is SO awesome he has to have a long , awesomely cool name! It comes from the Naruto abridged series on YouTube... If you search "Gaara of the Funk" I'm pretty sure the first vid that comes...
It is unknown. Sabaku no Gaara is his only name we know of. His surname isn't revealed.
I don't think Gaara has another name besides Sabaku No Gaara but that's just my opinion.
Yes, Gaara has no last...
1. Build the biggest sandcastle that you have ever seen.2. Fill the inside with super sticky honey.3. Put signs out the front proclaiming, "Free Sand inside :D"4. Watch what happens.