who are the characters in tropic thunder based on
Kirk Lazarus, Kevin, Tugg, Les
Tropic Thunder
Kirk and Kevin 
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Tropic Thunder [SEP] Plot
Tugg, believing Damien faked his death to encourage the cast to give better performances, assures the others that Damien is alive, and that they are still shooting the film. Kirk is unconvinced but joins them in their trek through the jungle. When Four Leaf and pyrotechnics operator Cody Underwood (Danny McBride) try to locate the deceased director, they are captured by Flaming Dragon. Four Leaf is revealed to have hands; he confesses to Underwood that he actually served in the Coast Guard, has never left the United States, and that he wrote his "memoir" as a tribute. As the actors continue through the jungle, Kirk and Kevin discover that Tugg is leading them in the wrong direction.