During the story arc for their current Ghost Rider, Robbie Reyes, Marvel’s Agents of S.H.I.E.L.D. never really explained who was the one who passed the Spirit of Vengeance to Reyes. Sure, it was heavily implied it was the one and only Johnny Blaze, given the leather jacket he was wearing and the motorcycle he was riding, but never the less it seems we won’t have a look at that backstory, at least not anytime soon.
During a press visit to the set of Agents of S.H.I.E.L.D., executive producer Jeff Bell talked to IGN about their take on the character and their intentions to explore or not to explore the Ghost Rider story before Reyes.
“There is a tradition within the comics that there’s been many Ghost Riders and our take on that was they’re not simultaneously a tribe of Ghost Riders but that it’s passed. The Spirit of Vengeance is passed from person to person. In that respect, at least our intention was that the Spirit of Vengeance was passed from one person to another. And who passed that on, there are suggestions within the storytelling … That’s as far as we’re going to take that part.”
This seems to mainly imply that there can only be one Ghost Rider at the time, so maybe there’s still hope to see Johnny Blaze in a flashback, or even powerless riding around the MCU.