This piece comprise of two characters that I created for one of my graphic novels. This is a possible chapter cover that I would use for my story.

Alluka, Killua and Illumi "Puppet Master" Inspired from the anime Hunter x Hunter, depicts Illumi controlling Killua who is in charge of his younger sister who has the power to destroy the world in and instant. 

Inspired by Hunter x Hunter depicts Killua dealing with the mind control and presence of his older brother Illumi