Who was Seneca Crane?

Seneca Crane

The Head Gamemaker of the 74th Hunger Games. President Snow alludes to having him killed after he failed to deter Katniss from pulling out the poisoned berries. During her private session with the Gamemakers, Katniss hangs a training dummy with "SENECA CRANE" painted on it to show that even the Gamemakers themselves are not safe from the wrath of President Snow.