remnant king To master the are of leaving a piece of excrement in the toilet after you have flushed.
Picture rollin' in for your daily newpaper sitting. You have had your second cup of coffee & are growing a tail. Time to go relieve yourself. You open the door to your favorite stall & bam! A big old nugget sits there, with no toilet paper & no discolored water. All you can do is laugh, because the 'remnant king' has struck again.
When someone goes back in time, they change the course of history. Meaning their timeline no longer exists from them altering it. This causes them to become a remnant of this old timeline whom is now living in the new altered timeline.
Example: You go back in time and kill your ancestor. You no longer exist, meaning you are now a remnant of the timeline where your ancestor lived and you existed.
Martin Stein: "The reason we cant find any evidence of his existence is because he isn't supposed to exist. He is a time remnant"