Biff Tannon is never adequately punished

[whisky]

Sure, he gets punched a couple of times, and falls in a manure a lot, but hardly the punishment for assault, attempted rape, and in various time lines actual murder.

 

[CaptainWacky]

Well he really really really hated manure.

And the murdering timeline gets erased from history so that's punishment enough really.

And old Biff in 2015 died (offscreen?)

 

[CaptainWacky]

He should have been fractured across the timelines and ripped apart in chronal agony.