In Days of Future Past we learn that Beast had created a serum which can temporarily suppress his powers (and treat Xavier...).

Then why is the older Beast in X-Men 3 both surprised and touched when his hand transforms into a human hand during the meeting with Leech?

Additionally, if Beast already knew how to suppress the X-gene in the 60s why didn't he tell anyone? And Professor X knew this as well and could have told someone about it. Especially Rogue, who clearly could have benefited from a temporary "cure".

Additionally, Beast’s serum seems to be better than the "cure" in X-Men 3, since it is not permanent. And it miraculously also cures paraplegia...

1 Answer 1


Several factors come into play.

Firstly, X-Men 3 does not tend to be considered canon:

According to Lauren Schuler Donner, one of the producers of all of those films, you can now safely consider X-Men 3: The Last Stand and X-Men Origins: Wolverine as non-canon. She explains this at the premier to X-Men: Days of Future Past:

“Just forget about ‘X3’ and the first ‘Wolverine’ - forget about that, too!“

From this question: https://scifi.stackexchange.com/a/106178/3804

Secondly, the Beast we see in ''Days of Future Past'' had seen the idea of a cure go wrong too often. Firstly with himself, then Mystique's reaction to the mere idea. Finally Bolivar Trask using the same cells, that helped him create his first serum, for the Sentinels. Beast is a smart man. He probably predicted the weaponisation of the cure.

Thirdly he's been campaigning for human-mutant peace since ''X-Men 1''.

Hank McCoy on TV in the bar scene from X-men 1, discussing the mutant debate

He's likely in awe because:

  • He'd given up hope for a 'cure'
  • He's aware of the treatment 'Leech' had been given, but still seemed innocent
  • Clearly he still misses being human looking
  • He's relieved it's not based on his serum

As for helping Rogue, he probably had too many factors (discussed earlier about Mystique) putting him off.

Professor X is also likely put off because:

  • He is for resolving differences, not removing them
  • The serum is able to remove his paraplegia; what other side effects might it have?

All this makes Beast's reaction not just plausible, but cromulent.

  • 1
    I made a guess as to which movie you meant when you said that "Secondly, the Beast we see in had seen". Please correct me if I was wrong.
    – FuzzyBoots
    Feb 15, 2016 at 12:37
  • Interesting that X-men 3 should not be considered canon. Then why is Wolverine referring to his friendship with Beast when he arrives at the school in the 70s? They become friends in X-men 3. Feb 15, 2016 at 12:46
  • 4
    @drmanhattan I believe this is because X-Men 3 and the Wolverine movies are considered to be part of a timeline that no longer exists, due to the events of Days of Future Past. Wolverine remembers everything that he experienced in that timeline, but everyone else lived through a new timeline that's still being explained in the films.
    – recognizer
    Feb 15, 2016 at 18:23
  • "cromulent". Well played...
    – John Bell
    Apr 4, 2016 at 8:08

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