Yes, there are. For example, Freddie Mercury. His life story is filled with real events that inspired the music and the legend of Queen. His upbringing, his struggle with his identity, and his rise to stardom are all real - life elements that contributed to the Queen story.
I'm not sure specifically as this seems like a rather strange and unheard - of story title. It could potentially be about some wild experiences on a tour bus involving rockstars, but without more context it's hard to say.
One possibility could be a science fiction graphic novel where scientists save the world with their groundbreaking discoveries and become heroes, thus being seen as rockstars.
In a Loki and Peter Parker fanfiction, they could team up. Loki, with his magic and cunning, and Peter with his spider - powers. They might face a common enemy, like a powerful sorcerer who is trying to take over the city. Loki could teach Peter some new ways of using his powers, and Peter could show Loki the importance of using powers for good.
Freddie Mercury. His story is remarkable. He was born in Zanzibar and came to England. He formed Queen and their music became iconic. He had an incredible stage presence and a unique voice. His battle with AIDS while still creating great music is a tragic yet inspiring part of his story.
In the fanfiction, Loki discovers he is pregnant just as the plans to build new Asgard are underway. He is initially worried about how the Asgardians will react. Thor, being his brother, stands by his side and assures him that new Asgard will be a place of acceptance. As Loki's pregnancy progresses, he uses his magic to help in the construction, creating beautiful illusions that inspire the builders. In the end, when the new Asgard is complete, Loki gives birth to a child who is seen as a new hope for the future of Asgard.
The plot could start with the mercenaries being discovered or arriving in a new town. They are immediately mobbed by fans and admirers. As the story progresses, their fame might attract the envy of some, leading to rivalries or attempts to undermine them. There could also be a powerful figure who wants to use their popularity for their own gain. Maybe the mercenaries get involved in a big quest because of their reputation, and they have to balance their rockstar - like lifestyle with the challenges of the quest.