User blog comment:KingDedede8888/Top 5: Most painful Death Battle Deaths!/@comment-12846745-20150926024255/@comment-26114005-20150926024746

I originally planned to include Deathstroke as a honorable mention, but ended up forgetting it XD

About the others, they were all pretty quick and nearly painless due to that, especially Knuckles's.

Having your brain deintegrated means you won't be feeling anything.

Mario was... Yeah, painful.

When Cap's neck was snapped, it was very quick, and he barely felt it.

Batman probably felt pain for some seconds, but was also dead very soon.