If you have catch the TV series of CHIMA which I have during the end of last year, you will notice one of the episode a Legendary Beast appear out of no where to assist the animal of that tribe. It was the Lions that came a huge Lion Legendary Beast.
The Lion alliance are the Gorillas with their Legend Beast...
And the Eagle having their Legend Eagle Beast that takes the dominant of the Sky.
On the evil side, the Cros also have their own Crocodile Legend Beast
And the Wolf which rob from the weak.
It would be a good choice with you like a Beast for the character to ride and it is the Legend Beast which will help them in battle or War.