Ok, so we have been working on a rotoscoping project in my animation class. I worked with someone for this, so it was kinda a group thing. We spent a total of 4-5 hours on this. 4-5 hours for 5 seconds of animation xD
Hope yall enjoy 
RotoSaiyan
Edit:
At first we were supposed to do 24 frames a second, but i kinda talked the teacher down to 12 fps 
However, most people didn’t know that would make their video a lot slower. So instead of the 5 seconds they recorded, they had 2.5 seconds slowed down to 5 seconds and it just looked slow 
I ended skiping every other frame and it made it a normal speed
Cool stuff. The intro was not quite as cool as your drawing video, but it has a unique quirk. I somewhat wish the background looked like it had more effort put in. The actual guy is quite good. Love the theme too.
If you want to make it a bit longer, you can do what the real DBZ does. Repeat frames a lot and only change parts of it like the glow effect. If you could, I would slow down the animation of the ca-me-ha-me-ha (however that’s spelled). It would make it more dramatic but would likely require more frames.
Well what we did was a group project. I did the drawing of the character, my partner did everything that wasn’t the character It took the longest to draw the character so he did all the other stuff
However, most people didn’t know that would make their video a lot slower. So instead of the 5 seconds they recorded, they had 2.5 seconds slowed down to 5 seconds and it just looked slow 
I ended skiping every other frame and it made it a normal speed