User blog comment:HarbingersOfNEVEC/Knuckles VS Donkey Kong/@comment-23933656-20150807234803

Well, here are a few things they have in common, off the top of my head.

- Both were originally enemies to Mario and Sonic, but eventually became allies with them, creating a friendly rivalry

- Both are known for their tremendous strength in the adventure games they are featured in and in the sport/racing titles they participate in, including the Olympic series

- Although not entirely dumb, both can be a bit gullible at times

- Although generally docile, both can become violent and brutal when enraged

- Both starred in their own games after their debut

- Both have battled numerous destructive forces over the years, and prevailed time and time again.

That's all I know for now...