Fantastic tribute.
Well, I can only hope you were given permission by each author to use their characters, and if so, well done my friend! I found it all well animated, although the story was a bit unusual.(If the animators already knew about the invaders, once they started losing their animations, why did they wait untill their creations were all wiped out to start re-animating them? That is the only "flaw" I can find in the story itself, at a first glance.)
However, other then that, a job well done. I also found the "suprise" at the end worth giving a chuckle over. Keep up the good work.