So, this is what happens to your Minecraft when you install a lot of mods; there are some mods that adds different creatures. This one even adds subspecies of Endermen, like me, an Enderman with green and white eyes, or mods that change your size like "Chiseled Me"...
There are a lot and lots of mods that can upgrade the game... or in this situation... Downgrade.

And that's what me and Toby set on doing, except I had something planned for Toby once he's reached the End...~
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Toby set himself a challenge after finding the Stronghold and placing the Eyes of Ender on the portal, since in a chest, he found a recalibrator which changes your size from a normal size up to 16 times smaller.
"Hey, I should try killing the Ender Dragon while being tiny..."
"Yeah, totally."
He placed his bed, and tried to sleep (to set his spawnpoint). Afterwards, he entered into the portal and.... Wooooooop...

He appear in a little island with a obsidian floor, so he shrunk...
He heard the roars of the Ender Dragon and starts to build a bridge with "sleepy dirt" (from a mod as well).

Thwoomp. Thwoomp
I teleported over to him once he reached the surface of the main island. Toby was in shock when he saw just how big I was compared to him.

"What is this? Wow, an Enderman! He is huge with this size!"
But what he didn't know was that this particular Enderman was me! Let's see how things looked from his perspective...
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For some reason, his arms reached out to me, then picked me up from the ground, and we were teleported to one of the islands of the End. There, I took out my super enchanted diamond sword, but that Enderman managed to remove it, along with my armour and the rest of my inventory.

The Enderman grinned, and opened his mouth, licking me and covering me with his alien slime. Among the slobbering, I could hear a distorted laugh coming from him. Was he laughing at me? All because am I tiny and I can't defend myself? He put me inside his mouth, shaking me all over his mouth, playing with me, tasting me like candy. I tried to escape, but his tongue prevented me. I tried again and his fingers were squashing me, pushing me more and more to the throat. And eventually...
GULP.
Down the throat I went, stripped of any chance of survival. I was at low health, and soon enough...
* Plop *
I plunged right into his stomach...
...but no fall damage? Why didn't I die?
To be fair, I was in normal survival, I was still in there, next to an Endermite.
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Whatever, mods rule!