Yes he dies by muttations
Thresh was 18 when he went into the 74th Hunger Games
Thresh is a character and you do meet him in the novels, once or twice. And you "see" Thresh in the Hunger Games movie, as well. So you do, so that question was irrelavent.
thresh gets chased by cato into the field where cato kills thresh
The role of Thresh was played by Dayo Okeniyi.
In the book, Cato killed him. In the film, the Mutts killed him
Thresh killed Clove
Yes that's why thresh let katniss go
Cato, the boy from District 2
Thresh in Distict 11
The girl's name is Clove, and she died because Thresh slammed her into the side of the Cornucopia.
Thresh is another tribute in the first hunger games Katniss takes part in. He is from the same district as Rue which is (I think) district 11.
I Believe She Is In District 11 Along With Thresh