No idea who the monster held by Arianne is. I thought she might be a Marincess or a Rush Duel monster, but none of those look like her. She looks familiar at least, I think it's a card printed in recent years.

BaiserLaVerite said:

No idea who the monster held by Arianne is. I thought she might be a Marincess or a Rush Duel monster, but none of those look like her. She looks familiar at least, I think it's a card printed in recent years.

Seems to be this one
https://yugipedia.com/wiki/Momyu_the_Sea_Shadow_Spirit