>>89087541Superman
unless the knife is magic or made of kryptonite I guess, Iceman (he'd freeze the knife, cooling it down), Cyclops (beam it out your hand), Punisher (shoot you at range) Wolverine (adamantium)
Oh, and not a hero, but Magneto. It's still metal, hot or not.
This trend is really quite annoying now, IMO. Not only are all the thumbnails crap shops and showing the idiot placing his finger on what is meant to be hot steel, but it being a knife makes no difference. Molten metals, red hot nickel balls, muzzle brakes, the heat is the main source of "cutting", not the knife. And all those videos came first, yet didn't get their e-dick sucked by Youtube for whatever reason.
Also, what kind of degree? Celsius, Kelvin, Fahrenheit? 
