In canon, there were two different trolls: One that got in and attacked Hermione, and one that was guarding the stone. Two totally different trolls, although many have noted that both were supplied by Quirrell. (And actually, because of this it has become fanon that Quirrell has a talent in dealing with trolls. (Although that Quirrell is a very different person from HPMOR’s Hansonian Quirrell, so don’t read to much into this with regards to HPMOR.))
And actually, because of this it has become fanon that Quirrell has a talent in dealing with trolls.
I believe that Quirrell actually stated this in canon. When he admitted in the chamber which held the Philosopher’s Stone that he was the one who had supplied the troll for the defenses, he said he had a knack for dealing with them, or something to that effect.
In canon, there were two different trolls: One that got in and attacked Hermione, and one that was guarding the stone. Two totally different trolls, although many have noted that both were supplied by Quirrell. (And actually, because of this it has become fanon that Quirrell has a talent in dealing with trolls. (Although that Quirrell is a very different person from HPMOR’s Hansonian Quirrell, so don’t read to much into this with regards to HPMOR.))
I believe that Quirrell actually stated this in canon. When he admitted in the chamber which held the Philosopher’s Stone that he was the one who had supplied the troll for the defenses, he said he had a knack for dealing with them, or something to that effect.