Hex is based off an adopt from Azerae on DA. She is a child between Lord Tirek and Twilight Sparkle.
https://fireanubis.deviantart.com/art/MLP-Shipping-Adopts-1-5-OPEN-743831175

Hex is a huge gentle giantess. Calm and peaceful. She spends most of her time in the castle gardens and enjoying the flowers and chatting with the ponies that pass through. Despite her large size, even towering over the princesses themselves, she remains a soft and peaceful soul.

Her little wings are too small to allow flight but they will flap when she gets excited. She is still growing so who knows how big she might get. She is trying to learn magic but she is not very good yet, but she tries.

I think she will be a fun character to play with. ^,..,^ <3