Dragon is a pet in Battle Run. He appears as a large, red dragon, that players ride upon. WWB_FolloWmE aka me was able to upload this picture of a dragon, the 1st one.
SpeedDuring the attack part of his usage (See below), he is granted a speed buff slightly less then Boost.
For a few short seconds after activation, Dragon spews out fire, killing anyone and their pets a short range in front of him (similar to Pyrosaur's first attack phase, only longer ranged for Dragon).
Dragon, as you may have realized, functions quite similarly to BabyLoo. Both grant a speed buff and kill people in front of them. Dragon's breath outranges BabyLoo's claws, however, making Dragon a direct upgrade.
- Dragon is Only obtained in Legendary eggs or trading