It is horse sense that this mascot would root for a two time national champ, considering he's won a few titles of his own. Name this galloping groupie and send me a his photo.
It is Rocky Mountain Thunder, He has won many titles before retiring to do football games and charities. The Bronco's joined the NFL (National Football League in 1970) making it a two-time national champ, They have won two Super Bowls back to back. 1998-1999.
I'm not quite sure where the 'Rocky Mountain' Thunder came from, cause I found his stage name to be "Thunder", and his real name is J B Kobask. And this info came off of the Denver Broncos website, make sure to look in the 'kids zone' becasue that's where the details are, along with a photo.