Nickname for Suffer-Not-Injustice

[Weirdo]

So I'm making a background character named Suffer-Not-Injustice (Discworld reference intentional). Since that's a mouthful, I'd like a nickname. Something appropriate for a guy who likes to play "Bad Cop." Possibly with "Sir" attached. My best idea so far is "Old Injustice."

Ideas?

[Grimmy]

Suf?

[Black Dow]

Suff?
Sni/SNI?
Silver (Suffer) - sorry couldn't resist :)

[feytharn]

The Swift Blade
The Swift Mercy
Sir Gallows
Sir Grimblade
Sir Hangalot (sorry couldn't resist)

[Weirdo]

Black Dow wrote:

Silver (Suffer) - sorry couldn't resist :)

Thanks for not resisting. It might be a bit of a pun, but I think I'm using this one.