Fun fact: Semi-True Hyper Sonic was almost a real Sega thing at one point.
In one of the comics, Super Sonic gets beaten by an other dimensional hedgehog and, in a rage, turns into a "darker form". This form doesn't care about anything except winning, and easily defeats the enemy. But when he's about to deal the final lethal blow, Shadow himself appears and tells Sonic "this isn't you! Control your anger!" After which, Sonic powers down, and swears never to let that form out again. And to this day, he hasn't.
But...what if he had?
Awesome episode in an awesome series, Sonic's transformation in the Tails fight actually made me break out into a cold sweat the first time I saw it! If I could change one thing, it would be to call this form something other then "Semi-True Hyper Sonic" - makes it sound less impressive and interesting then what it is, and is also kind of a mouthful. Something like "Psycho Sonic", maybe, to show this form's true nature? But that's just my taste. Regardless, amazing animation, and I love coming back to watch on occassion!