What happened to this creeper? It seems to have a blueish glow
In Minecraft, I came across this: 
The creeper in the picture seems to be surrounded by a blue-ish glow. What is it? I immediately left my world and came here. What does it do?
Best Answer
The creeper in the picture is a Charged Creeper. It only appears when a creeper gets shocked by lightning. They have a larger explosion radius than regular Creepers.
If you can make it follow you next to another mob, then make it explode, the mob will drop his head, but only one mob head per Charged Creeper explosion.
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What does a blue creeper mean in Minecraft?
A normal green creeper turns into the super-powered charged blue creeper whenever lightning strikes within 4 blocks of their current position. Charged blue creepers have double the explosion power of a normal green creeper, making them quite deadly to an unprepared player.How do you make a creeper glow?
Steps to Turn a Creeper into a Charged CreeperWhat happens when you light a creeper on fire?
Using a flint and steel on a creeper forces an explosion, but fire charges don't work. If a player has the invisibility effect and isn't wearing any armor, the creeper does not approach the player, although attacking it or touching it (the player's hitbox must touch the creeper's) causes the creeper to explode.How rare is it for a creeper to get struck by lightning?
One Creeper, all loaded chunks Given the probability of a chunk getting hit by lightning is 1:100,000, that means the probability of at least one chunk getting hit by lightning is 1:485.Testing The New 1.19 Minecraft Mobs Early!
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Answer 2
When creepers are struck by lightning, they will glow. This means that the creeper is super charged and will be more hostile, maybe enough to blow up a small house! When another mob is near by when a super charged creeper blows up, it has a 75.99% chance of dropping a skull, depending on what type of mob it is. A Player's 76.89% chance of dying of a creeper explosion increases to a 94.97% chance of dying when the creepers is charged. I can't guarantee anything else to happen when charged creepers are around, but I may have something to share soon, because I have been experimenting with charged creepers, and I've gotten results that hint others facts about charged creepers.
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Images: Askar Abayev, Katerina Holmes, Katerina Holmes, Tim Douglas