A to Z Challenge 2017 -- Zechs Merquise, Killua Zoldyck #atozchallenge

Zechs Merquise is the mysterious and gentlemanly OZ Gundam pilot. His past is hidden like his face behind a mask. He is one of the leaders of Oz in Gundam Wing.

He faces one of the five young Gundam pilots from the spaces colonies in combat, dueling him in the Arctic because their battle was interrupted.

He was once the crown prince of the Sanc Kingdom (say-nkt) whose family and kingdom was destroyed by the United Earth Sphere Alliance. Millardo Peacecraft died and Zechs was born.

He turns back on OZ when his sister Relana becomes a player in politics to end OZ's tyranny.

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Killua Zoldyck is Gon's best friend in the Anime Hunter X Hunter.  He is also the shining star of the Zoldyck family of assassins. Seeing him for the first time, one wouldn't think so since he acts just like a normal teen. He calmly rides his skateboard as he initiates a conversation with Gon during the first test of the Hunter's Exam. Although there are a few subtle hints that he is more than he appears before the exam.

His parents have high hopes for him to become the next leader despite having older siblings.

This is a family that is beyond dysfunctional.  Torture as punishment (I mean whips and chains and other various devices) is like grounding for them. His father finally lets him return to his friends, knowing that letting him go would return him to the fold eventually.

Killua has no qualms about ripping hearts out of people when he's in a bad mood.

He changes when he meets Gon, Kurapika, and Leorio. He becomes stronger and softens at the same time. His loyalty to them puts him in harms way more than once.