Adopt Thana's adoptive older Brother named Griffyth??

Thana used to live with a Russian-originated(all fluent in Russian[still is able to speak regular English as well]) Hyena called Griffyth, and they did almost everything together. After Thana ran from a pack of wolves after making some trouble, she never found out the way back to where they lived. So now Griffyth will eventually find out where Thana ended up and decided to join Thana in Snowbound.

Rules;
-Name is decided and I'd highly prefer you keep it- although surnames are free for all.
-Will be a male only since his name is a guy's name.
-Has to be a Hyena but the appearance(design of the hyena and if he has mutations) could be up to you.
-Age has to be higher than 13 Months.
-Stay in Snowbound for a long time with Thana.
-Stay active with him please and dont kill him off quickly!! I look forward to sibling plots and his own plots!