Cleo Tsukikari/Motou © Yukiko Hisame
YU-GI-OH, YU-GI-OH! GENEX and all characters © Kazuki Takahashi

There is a huge reason for why I've shown Cleo like this and for that reason, I need to give a bit of a spoiler for the Chronicles of the Sun and Moon Reborn series.

I also wanted to show her as an older teenager because in the Egyptian arc of this, Cleo was only ever seen as (in the eldest) as either 12 or 13 and then in the first arc of the reborn saga, she is only 10.

I may, later on, do a picture of Cleo in arc 1 of the reborn saga (her cute 10-year-old form) with her GX form, to show both sides of her personality.

SPOILER: Cleo in fact dies at the end of the first arc. She is murdered by Asriel and Karas on Gakt's orders. But be reassured, because Cleo is in fact a phoenix; a mythical fire bird that can never die, Cleo does in fact get reborn properly and becomes (like in Egyptian times), the daughter of Atem and Mana. Although she does get reborn, she has some memories of her two previous lives and because of this, is a master duelist and loves any kind of game (wonder where she get's this from?). But because of this, Cleo does not get seen from arc 1 of the reborn saga onwards, but she is referred to as "that child".