This is the HG 1/144 Gundam The End model kit. :) This model was gotten for me as a gift by my other sister (I have two sisters). :) She chose this particular one because the colors reminded her of Maleficent. I'm seriously loving the design and colors on this Gundam! This Gundam is just badass! :)
Gundam The End is the machine used by Saga Adou. Built to suit Saga Adou's fighting style, Gundam The End hides it's body beneath a red cloak (in the anime), and The extendable gigantic arms at the sides are known as 'Fist the End' and they serve as the gunpla's primary melee weapon/shield, while the DE Fangs launched from these arms are the gunpla's primary ranged weapon. Each of the Fist the Ends also has a Gundam face on their palm, and it can transform into a fanged mouth for melee combat or to fire a powerful beam. A special attack known as 'Dead End Finger' can also be performed using these large arms. It's other weapons include a pair of handguns, beam sabers generated from the fingers of the gunpla's standard hands, and the ability to open up its abdomen into a large 'mouth' to attack enemy unit in very close range or to 'eat' enemy's beam attack. This mouth also contains a hidden miniature Gunpla known as 'Ikkaku' that serves as the Gundam The End's secret weapon. It has another special attack as its ultimate technique, but not much is known about it.

All the data I have on this one I had to get online, since so far, I've only seen this Gundam in two episodes, and neither of those episodes showed enough of it's abilities for me to get an idea of what it's fully capable of in battle.