Code Lyoko, Season 2

Jeremy:
I can explain everything. All this kissing is another one of X.A.N.A.'s schemes.

Odd:
That doesn't make any sense. He can't control us.

Jeremy:
I know. But I also know I did not kiss Heidi. So there must be a Jeremy clone somewhere.

Yumi:
And a Yumi clone.

Ulrich:
And an Ulrich clone also.

Jeremy:
That's right. And I bet they're all just one polymorphic clone.

Odd:
A poly what?

Jeremy:
A polymorphic clone. It can change its appearance at will. X.A.N.A. must have sent some kind of ghost that can look like anyone it wants to.

Ulrich:
But why?

Yumi:
To make trouble in our group, to divide and conquer.

Ulrich:
X.A.N.A.'s really smart. Not like us.