What Marvel character can kill Deadpool?
Okay, OKAY! I got a cool twist for this situation:
BEFORE answering this question I'm gonna make a quick statement for Everyone!
DEADPOOL IS NO LONGER CURSED WITH ETERNAL LIFE.
Every GOOGLING Fool knows that Thanos, pissed off at The budding relationship between Deadpool and Mistress Death, commissioned a curse that prevented Deadpool from dying. Of course, prior to the "curse," Deadpool was pretty hard to kill anyway- or so we thought. Turns out that Deadpool dies , but only for mere seconds before coming right back to life. Anyway, So Death was actually in really big trouble, so Thanos took his curse away and promptly killed Deadpool.
GOOGLE THAT, PEOPLE, I got to keep moving with my answer.
So the first Marvel character that can kill Deadpool is Thanos.
Prior to Deadpool's immortality curse being removed by Thanos