Tien Shinhan is a human with an extra eyeball in his forehead. He is very strong for a human being, he is the second strongest human on Earth. He is the eighth strongest Z Warrior next to Krillin, with a power level of over 1,000,000. He is killed two times, once on Earth he is killed by Nappa (A Saiyan from the Saiyan Saga), and again when Buu blows up the Earth (In Dragon Ball GT). Tien has barely any fears. He goes right in to battle because he thinks he would be better to die then leave the fight. He gets that from Goku, his friend.