Mister Pück (character)

From Code Lyoko WIKI

Mister Pück was a elf-like entity that was an important part of the Princess's past. He was originally a doll given to Aelita by her parents during Christmas, when she was just a child. Franz Hopper placed a locker key to his diary, within the doll. He later appeared in Aelita's dreams in the present, in which he runs from a pack of wolves, taking refuge in a tree. This may be symbolic, as Aelita found the doll in a hole, behind a picture of a tree.

The pointy ears are one of the features that Aelita has in her Lyoko avatar.