not that I recall
A boy tribute from District 1 named Marvel.
There is no character named Ian Nelson in The Hunger Games.
There is nobody named "Mo" in the Hunger Games.
No. Marvel did have a character named Jack O'Lantern and Jack Pumpkinhead. Both of these are no relation the the Pumkinhead character from the horror movies.
No, Katniss Everdeen is a fictional character. I think the actress who plays Katniss named Jennifer Lawrence does have a Facebook though.
There is no person named Claudius Undersee. There is a person named Claudius Templesmith, who is the announcer for the Hunger Games, and there is a person named Mayor Undersee, who is the Mayor of District 12.
An edible plant.
DC and Marvel have a superhero named Captain Marvel, but DC's Captain Marvel is more popular (The character with the white cape and is red with a lightning bolt on his chest)
Katniss's stylist is named Cinna in The Hunger Games. Good book by the way.
Katniss Everdeen is named Katniss
Primrose Everdeen.
In the 74th Hunger Games, you never find out there names. In the 75th Hunger Games, the boy tribute is Beetee, and the female tribute is Wiress.