Not likely. Usually, such names in stories are made up for entertainment purposes and not drawn from real-life events. So, I'd say it's not based on a true story.
Well, without more context, it's difficult to say exactly who Frank Killerman based on a true story is. It could be a person from a family's history, like a great - grandfather who did something remarkable and now the story is being told with his name. Or perhaps it's someone from a particular region's lore, and the 'true story' aspect means it has some real - life roots in that area's past.
Well, Killerman is not a true story. It's a work of fiction that the creators came up with to engage and thrill the audience. There's no real-life basis for it.
Killerman is not based on a true story. It's a work of fiction that likely drew inspiration from various elements but has no direct connection to actual happenings.