Omg, I was just researching my enemy to prepare for his forthcoming death in Avengers Arena:
Quicksilver is a race traitor. Dead to me now.During the Avengers vs. X-Men storyline, Emma Frost (possessing a fraction of the Phoenix Force) arrives to destroy Juston's Sentinel, seeing it as a threat to mutantkind. When Juston claimed that he loved it, the entire Academy rose to defend the Sentinel. During the battle, the Sentinel demonstrated the ability to override its prime directive to self-preservation, sacrificing itself to save Juston. Emma then melted down its processor, unaware that Quicksilver had swiftly swapped it with a duplicate. He and Giant-Man were then able to rebuild the Sentinel.