Caméléon
Victoire called im Caméléon when she wanted to tease him.
And the word changed over the years, like Teddy himself, from a snide remark, to an annoyed screech when he pulled her hair or hid her favorite doll or refused to help her with her history essay or ignored her for a whole day, to a lovingly whispered pet name.
She was his best friend, who stayed awake with him when the moon was full and visited the graves of his parents with him on her birthday, instead of eating cake with her parents, and held him when he got lost in all of his shapes.
And he was her Caméléon and he woud stay it forever.