Aelita and Jeremy in “Unfinished Business”

Jeremy, do you...think my father's still alive? My father, Franz Hopper. Do you think it's possible to re materialize him?

No. What I mean is there's no way to.

But he managed to survive when X.A.N.A. captured him the first time. Why not a second time?

Your father sacrificed himself for you, Aelita. And he had to use what little strength he had left to bring you back to life.

I know. But, I thought there could be a hope, that maybe you could find a way.

Impossible! I checked every inch of Lyoko and there isn't the slightest sign of him. Aelita, Ive been trying really hard for you to into the worldwide web, so you can fight X.A.N.A. And you should think the way I think. I mean, think about the future.

And just forget my past, huh!? You think it's easy!? You didn't spend ten years of your life as some computer software! I wish I never recovered my memory!