Long before Spitfire, Soarin’ and the others were the Wonderbolts, Comet Blaze and Swift Savior were enrolled into Wonderbolt Academy, where both met each other. However, only Comet out of the two would become a Wonderbolt on the team. Their academy instructor was Firefly, Rainbow Dash’s mother and the founder of the Wonderbolts, and Bifrost, Rainbow Dash’s father and right-hoof stallion.
 
Comet Blaze is also the father of Jet Stream and Star Wishes uwu
 
Comet Blaze © Tambelon  
Swift Savior © Cherry-Spice  
MLP:FiM © Hasbro