Here is End's alternate form.

Name: End
Height: 40' 0"
Weight ???

It is confirmed that End has a second form which is much larger. While in this monstrous form, he is much more fierce but also has less control over his thoughts. No one knows what causes End to transform, but there is speculation that it has something to do with the elemental corrosion on his legs. Whether or not End can control the transformation is a mystery as well. Regardless, "Super" End is a dangerous beast capable of mass destruction.

Rumor has it that a plate of delicious cookies will calm him down, but this remains unproven.