name of font please , ive used this font before but cant think of the name

Rockster  Sugerida por Ratified305 


Helvetica Black  Sugerida por pilaster 

Well, here's what I've got. The website says it's not a font, but I think I found it! As for the 4, I don't know!

I'm not the only one who thought it was, actually, a font

4
Helvetica Black?

thank you