Looks a lot like a flash grenade or smoke bomb rather than a real live grenade. Or a training grenade. Otherwise, the guy would have been pulp instead of crawling out like that.
Tony Stark could likely be R2D2′s ancestor too. Maybe the ‘R’ stands for ‘Iron’ and the ’2D2′ is some sort of genetic code. That means that the Jedi could very well be descendants of Loki or Thor. However, Professor X or Magneto are more suitable candidates.
Next, we have the Ewoks and Chewbacca. The Beast obviously, but Mystique has to be the female ancestor.
The Emperor is one of Lex Luthor’s children, while Darth Vader’s lineage can be traced back to the Wolverine and Dr. Jean Grey (Phoenix). Interesting history lesson.