If it suits you, we could link backgrounds?  Say...<br/><br/>Johnathon's parents were friends of Kasumi's before the war, and when his parents and Kasumi's mother died, Johnathon was brought to live with us, but not before the Master made sure he would remain in human form, with a magic adamantium/silver collar.<br/><br/>He took an interest in Johnathon, and trained him in stealth techniques, and anatomy.<br/><br/>And released him when the war ended.  Recently he's joined the Military as a special advisor.<br/><br/>(Just coming up with something off the top of my head.) Would something like that work?<br/>