LogFAQs > #966276049

Things that Donkey Kong has shown guilt for:

-Being a misogynist toward Dixie Kong and saying she couldn't be a hero and find the Lost World because she was a girl (forgiven after an apology).
-That one time he hit Diddy really hard (Diddy bit his finger in retaliation, immediately forgiven)
-Oversleeping, causing Diddy to get captured by the Kremlings (corrected like 30 seconds later, forgiven)
-Being hypnotized by Mario's corporate marketing into taking over a toy factory and kidnapping his ex girlfriend (forgiven to the point where Pauline and DK are friends who hold surprise parties for Mario now)
-Not saving a banana from being crushed and made into a tiki (unforgiven, because the banana is dead)

So unless that one banana from DKCR is replacing the Giant's Knife, I think DK's good.