The Nuclear creeper..as its name suggests...IS A NUKE ON LEGS...It's blast radius is A HUNDRED AND FIFTY BLOCKS....AND ANYTHING WITHIN THAT RADIUS WILL DIE IMMEDIATELY..ALL THERE WILL BE LEFT IS A HUUUGE CRATER...FIRE AND RADIOACTIVE WASTE....but the good thing is that these nuke creepers are neutral...the only way to provoke them is to kill another creeper (can be a normal one but it has to be a creeper) infront of them..this will infuriate them and...you know the rest...otherwise they are mostly chill with you..even if you hug them they won't mind at all! (they don't really emit a lot of radiation so it's safe to hug them)..The thing with these creepers is that...they can put themselves back together after the explosion..or basically..they can respawn after dying or blowing up...they have 20 health like most creepers..however unlike most creepers they can talk and interact with you...i would suggest not killing another creeper infront of these guys if you want to keep your MC world