Kayzee

That, dearest love @Kayzee, @Rikifive, is Neversoft Eye; the mascot and an unlockable skater in THPS3 (except for the PlayStation iteration). Neversoft Eye has also been imported into Guitar Hero World Tour: Definitive Edition.

I also know the skateboard tricks NSEye pulled off in that vid clip.
1) Truckstand -> Truckstand Flip
2) To Rail/Primo
3) Casper -> Casper Shove

I only played THPS3 and 4 on PSX. Now that I checked it, I didn't even know it was on PS2 as well! How come I didn't know about it?

I miss playing these on PSX though, I often was doing dumb things rather than playing normally. I really miss these times...

Nice, I never paid too much attention to name of the tricks, so I remembered only few basic ones lol.

THPS3 was on PlayStation, PS2, Xbox, and PC. (I forget which Nintendo console got THPS3)
As for the flatland tricks, most of them would actually not even be in the game proper until THPS4 or even THUG1.