No creepers can't destroy obsidian blocks but they can destroy a working portal.
No, Creepers do not burn, the sun burns undead such as Zombies and Skeletons.
Creepers Skeletons Zombies Spiders Endermen For specific info, go to minecraftwiki.net
Yes they can. Iron doors are very hard but not hard enough.....
There aren't "ancient creepers" in the application version of Minecraft, there are creepers.
It's called Minecraft... creepers have ALWAYS been in Minecraft.
List of NPCS: Zombies, skeletons, creepers, enderman, silverfish, squid, spiders. And the most rare out of all of them: The spider jockey.
22 for skeletons, zombies and creepers however endermen take more.
Spiders, Zombies, Skeletons, and Creepers spawn in the dark when it turns morning skeletons and zombies catch fire from the sunlight. Creepers and Spiders however, survive spiders don't normally attack in the day though unless you attack them first. Creepers on the other hand attack in both day and night.
Creepers don't burn in the sunlight because they aren't programmed too! The only Mobs that currently burn in sunlight are Zombies and Skeletons. No other Mobs will burn in sunlight. Also, Zombies/Skeletons can still do the player damage whilst on fire.
yes creepers,skeletons, pig zombies, ghasts, enderman, enderdragon, silverfish, spider, cave spider, spider jockeys, magma cubes, blazes and slimes
No, Creepers just flee from them.
If you havent noticed most of the things in minecraft is BASED in real life except: Creepers, skellingtons, giant spiders, zombies, nether including all the stuff in there, and thats about it.