@@santiagocabrera You need to do a neutral jump then do up + heavy punch. What makes it unique (in SF2 at least) is that it has a tiny range and basically hhis only opponents over your head. It very very situational. But the advantage is that it's a guaranteed stun if it hits making it also unique and very powerful.
So crazy!! Why did you select Zangief for the SpeedRun?? This version, the AI of the CPU seems have a "Read-First" ability, and the attack power is string (HARDest/8). Zangief has no strong Anti-Air and the movement is slow. I also play Zangief recently, and noticed that you're very familiar with the behavior judgment of the computer.