User blog comment:Wondergirl130191/The Fates of.../@comment-5031726-20121114011943/@comment-5507592-20121114012149

That got me thinking, (I doubt this will happen cuz it would be EXTREMELY DARK) but what if Iris was killed at some point, maybe trying to save Flash or something, and therefore Impulse ceases to exist! (Again, thats dark, so I doubt it would happen, maybe something more likely to happen in the comics not so much a cartoon)