He explained to Poppy that the hammer was meant to go to the Hero of Demacia–the only one who could keep Demacia whole. As her friend drew his last breath, Poppy swore to him that she would find this hero and place the weapon in his hands.
That just proves that Poppy is male.
All the lines she says about her ''hammer'':
''What do you mean my hammer's too big?''
''Right in the... hammer...'' upon falling on the ground.
''Yep, it's even heavier than it looks.''
''I'm in one-hundred-percent! That's everything, right?''
Nice try.
Sadly, he said hero and not heroine, thus poppy assumes the hero is male
(it might also simply be a figure of speech)
Well at least we know where he is
I feel like new Galio is really the hero, and the hammer is like a battery for him.
