Hard to top badass fathers like this guy.

[hider=You Know His Name]
[img]http://fc01.deviantart.net/fs46/f/2009/227/a/4/Goku_ssj_1_by_gokusuke.jpg[/img]
[/hider]

But I'm not that versed in anime so I could be wrong. My personal fav tho.